feat: add arbitrary-length #magic macro using InlineArray

[kkazuha7]

• Add new #magic macro supporting ASCII strings of any length
• Extends beyond #magicNumber's 2/4/8 byte limitation
• Uses InlineArray<N, UInt8> for compile-time optimization
• Add _loadAndCheckInlineArrayBytes helper function
• Add InlineArray Equatable conformance for UInt8 elements
• Include comprehensive tests: macro expansion + end-to-end runtime
• Maintains backward compatibility with existing #magicNumber

Checklist

• I've added at least one test that validates that my change is working, if appropriate
• I've followed the code style of the rest of the project
• I've run Scripts/format.sh to correctly format my change
• I've read the Contribution Guidelines
• I've updated the documentation if necessary