Add a 'compile-once-test' subcommand #46

Job	Run time
Test / Linux (nightly-main - jammy)	2m 11s
Test / Linux (nightly-6.2 - jammy)	2m 32s
Benchmark	5m 9s
Test / Linux (6.2 - jammy)	2m 0s
Test / Linux (6.0 - jammy)	2m 18s
Test / Linux (6.1 - jammy)	1m 54s
Test / Swift SDK for Wasm Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test / Windows (${{ matrix.swift_version }} - windows-2022)	0s
Test / Static Linux Swift SDK Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test / macOS (Xcode ${{ matrix.xcode_version }} - ${{ matrix.os_version }} - ${{ matrix.arch }})	0s
Soundness / License headers check	8s
Soundness / Python lint check	8s
Test / Embedded Swift SDK for Wasm Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Soundness / Broken symlinks check	5s
Soundness / API breakage check	1m 40s
Soundness / Shell check	54s
Soundness / Unacceptable language check	0s
Soundness / Documentation check	46s
Soundness / YAML lint check	7s
Soundness / Format check	-1s
	19m 51s

Provide feedback