Refactor OP-TEE message types and add RPC args support

[sangho2]

This PR refactors the OP-TEE message types and related functions to handle variable-length parameters. It also supports OP-TEE RPC message types to enable future RPC implementation. In addition, it leverages zerocopy to remove some unsafe operations.

#641

[wdcui]

Overall the code looks good to me. I left some minor comments below.

[github-actions]

🤖 SemverChecks 🤖 ⚠️ Potential breaking API changes detected ⚠️

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--- failure enum_struct_variant_field_added: pub enum struct variant field added ---

Description:
An enum's exhaustive struct variant has a new field, which has to be included when constructing or matching on this variant.
        ref: https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/enum_struct_variant_field_added.ron

Failed in:
  field rpc_args of variant OpteeSmcResult::CallWithArg in /home/runner/work/litebox/litebox/litebox_common_optee/src/lib.rs:2113

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/inherent_method_missing.ron

Failed in:
  UteeParamsTypes::new, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:415
  UteeParamsTypes::into_bytes, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:415
  UteeParamsTypes::from_bytes, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:415
  UteeParamsTypes::type_0_or_err, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:418
  UteeParamsTypes::with_type_0, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:418
  UteeParamsTypes::with_type_0_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:418
  UteeParamsTypes::set_type_0_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:418
  UteeParamsTypes::type_1_or_err, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:419
  UteeParamsTypes::with_type_1, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:419
  UteeParamsTypes::with_type_1_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:419
  UteeParamsTypes::set_type_1_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:419
  UteeParamsTypes::type_2_or_err, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:420
  UteeParamsTypes::with_type_2, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:420
  UteeParamsTypes::with_type_2_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:420
  UteeParamsTypes::set_type_2_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:420
  UteeParamsTypes::type_3_or_err, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:421
  UteeParamsTypes::with_type_3, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:421
  UteeParamsTypes::with_type_3_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:421
  UteeParamsTypes::set_type_3_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:421
  OpteeMsgAttr::new, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1348
  OpteeMsgAttr::into_bytes, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1348
  OpteeMsgAttr::from_bytes, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1348
  OpteeMsgAttr::typ, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1353
  OpteeMsgAttr::typ_or_err, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1353
  OpteeMsgAttr::with_typ, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1353
  OpteeMsgAttr::with_typ_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1353
  OpteeMsgAttr::set_typ, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1353
  OpteeMsgAttr::set_typ_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1353
  OpteeMsgAttr::meta_or_err, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1354
  OpteeMsgAttr::with_meta, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1354
  OpteeMsgAttr::with_meta_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1354
  OpteeMsgAttr::set_meta, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1354
  OpteeMsgAttr::set_meta_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1354
  OpteeMsgAttr::noncontig_or_err, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1355
  OpteeMsgAttr::with_noncontig, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1355
  OpteeMsgAttr::with_noncontig_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1355
  OpteeMsgAttr::set_noncontig, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1355
  OpteeMsgAttr::set_noncontig_checked, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1355

--- failure repr_c_removed: repr(C) removed ---

Description:
repr(C) was removed from a type. This can cause its memory layout to change, breaking FFI use cases.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#repr-c-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/repr_c_removed.ron

Failed in:
  struct UteeParamsTypes in /home/runner/work/litebox/litebox/litebox_common_optee/src/lib.rs:422
  struct OpteeMsgAttr in /home/runner/work/litebox/litebox/litebox_common_optee/src/lib.rs:1450

--- failure union_missing: pub union removed or renamed ---

Description:
A publicly-visible union cannot be imported by its prior path. A `pub use` may have been removed, or the union itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/union_missing.ron

Failed in:
  union litebox_common_optee::OpteeMsgParamUnion, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-main/aa028baa08c98942826f673ebeb18e6d6f5baf6d/litebox_common_optee/src/lib.rs:1311