feat!: signature file grammar #309

Job	Run time
Test Go binding (ubuntu-latest)	8s
Test Node binding (ubuntu-latest)	17s
Test parser (ubuntu-latest)	18s
Parse examples (ubuntu-latest)	2m 30s
Test Go binding (windows-latest)	1m 1s
Test Node binding (macos-latest)	46s
Test parser (windows-latest)	41s
Parse examples (macos-14)	2m 32s
Test Go binding (macos-latest)	11s
Test parser (macos-14)	24s
Fuzz fsharp	1m 19s
Fuzz fsharp signature	1m 13s
Test Python binding (ubuntu-latest)	14s
Test Rust binding (ubuntu-latest)	13s
Test Python binding (windows-latest)	52s
Test Swift binding (ubuntu-latest)	30s
Test Rust binding (windows-latest)	1m 3s
Test Python binding (macos-latest)	19s
Test Swift binding (macos-latest)	22s
Test Rust binding (macos-latest)	20s
	15m 13s

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