Migrate to GitHub Actions #2

Job	Run time
Swift 6 Language Mode	0s
Soundness / API breakage check	2m 35s
Soundness / Documentation check	1m 52s
Soundness / Unacceptable language check	3s
Soundness / Format check	9m 14s
Soundness / Broken symlinks check	3s
Soundness / License headers check	4s
Soundness / Shell check	40s
Soundness / YAML lint check	5s
Soundness / Python lint check	5s
Cxx interop / Cxx interop / Linux (5.9)	1m 38s
Cxx interop / Cxx interop / Windows (6.0)	1s
Cxx interop / Cxx interop / Linux (5.10)	1m 41s
Cxx interop / Cxx interop / Linux (6.0)	1m 43s
Cxx interop / Cxx interop / Windows (nightly-6.0)	2s
Cxx interop / Cxx interop / Linux (nightly-6.0)	2m 3s
Cxx interop / Cxx interop / Windows (nightly-main)	3s
Cxx interop / Cxx interop / Linux (nightly-main)	2m 21s
Unit tests / Unit tests / Linux (5.9)	1m 33s
Unit tests / Unit tests / Linux (5.10)	1m 32s
Unit tests / Unit tests / Linux (6.0)	1m 33s
Unit tests / Unit tests / Linux (nightly-6.0)	2m 8s
Unit tests / Unit tests / Linux (nightly-main)	2m 15s
Unit tests / Unit tests / Windows (6.0)	3s
Unit tests / Unit tests / Windows (nightly-6.0)	3s
Unit tests / Unit tests / Windows (nightly-main)	3s
	33m 23s

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