Adopt GitHub actions #5

Job	Run time
Swift 6 Language Mode	0s
Soundness / API breakage check	3m 34s
Soundness / Documentation check	2m 30s
Soundness / Format check	47s
Soundness / Broken symlinks check	3s
Soundness / License headers check	5s
Soundness / Python lint check	3s
Soundness / Shell check	37s
Soundness / Unacceptable language check	2s
Soundness / YAML lint check	5s
Cxx interop / Cxx interop / Windows (6.0)	3s
Cxx interop / Cxx interop / Linux (5.9)	2m 4s
Cxx interop / Cxx interop / Linux (5.10)	2m 2s
Cxx interop / Cxx interop / Linux (6.0)	2m 18s
Cxx interop / Cxx interop / Linux (nightly-6.0)	2m 51s
Cxx interop / Cxx interop / Linux (nightly-main)	2m 54s
Cxx interop / Cxx interop / Windows (nightly-6.0)	2s
Cxx interop / Cxx interop / Windows (nightly-main)	1s
Unit tests / Unit tests / Linux (5.9)	4m 12s
Unit tests / Unit tests / Linux (5.10)	4m 15s
Unit tests / Unit tests / Windows (6.0)	2s
Unit tests / Unit tests / Linux (6.0)	4m 42s
Unit tests / Unit tests / Linux (nightly-6.0)	5m 12s
Unit tests / Unit tests / Windows (nightly-6.0)	3s
Unit tests / Unit tests / Linux (nightly-main)	5m 20s
Unit tests / Unit tests / Windows (nightly-main)	2s
	43m 49s

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