refactor: Integrate ic test, stable-structures v0.7.0

[wasm-forge]

• integrate ic-test
• refactor project structure
• update dependencies
• update to the stable-structures v0.7.0

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 97.08223% with 11 lines in your changes missing coverage. Please review.

Project coverage is 94.14%. Comparing base (f54e6e8) to head (e99d044).

Files with missing lines	Patch %	Lines
stable-fs/src/storage/types.rs	44.44%	10 Missing ⚠️
stable-fs/src/storage/metadata_provider.rs	75.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
- Coverage   94.33%   94.14%   -0.19%     
==========================================
  Files          20       21       +1     
  Lines        6388     6409      +21     
==========================================
+ Hits         6026     6034       +8     
- Misses        362      375      +13     

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