tests: Import mtasc tests from gnash #30776

Job	Run time
Paths filter	10s
Coverage Report	12m 47s
Lints with Rust nightly	4m 17s
Check dependencies	55s
Lints with Rust beta	5m 28s
Test Rust stable / ubuntu-24.04-arm	5m 24s
Lints with Rust stable	4m 44s
Test Rust beta / ubuntu-24.04	5m 26s
Test Rust stable / macos-15	5m 47s
Test Rust nightly / ubuntu-24.04	5m 31s
Test Rust stable / ubuntu-24.04	7m 50s
Test Rust stable / windows-2025	13m 15s
Test Rust ${{ matrix.rust_version }} / ${{ matrix.os }}	0s
Lints with Rust ${{ matrix.rust_version }}	0s
	1h 11m 34s

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