Refactor test runner #686

Job	Run time
Build Assemblyscript tests (ubuntu-latest)	32s
Build Rust tests (macos-latest)	2m 59s
Build Assemblyscript tests (windows-latest)	34s
Build Rust tests (windows-latest)	54s
Build C tests (ubuntu-latest)	8s
Build Rust tests (windows-11-arm)	1m 5s
Build Assemblyscript tests (macos-latest)	27s
Build Assemblyscript tests (windows-11-arm)	36s
Build C tests (macos-latest)	17s
Build C tests (windows-latest)	1m 1s
Build Rust tests (ubuntu-latest)	53s
Build C tests (windows-11-arm)	1m 8s
Run tests (ubuntu-latest, wasmtime)	27s
Run tests (windows-11-arm, wasmtime)	59s
Run tests (macos-latest, wasmtime)	34s
Run tests (windows-latest, wasmtime)	58s
upload_test_binaries	0s
	13m 32s

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