Support AArch64/ARM64, upgrade LLVM and C++ version#415

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soulofmischief wants to merge 14 commits intodigego:masterfrom

soulofmischief:aarch64

Commits on Dec 10, 2025

Bump minimum required CMake version to v3.19
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Set the minimum macOS deployment target for ARM64 to macOS 11.0 (Big Sur)
soulofmischief
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