Migrate to GitHub Actions #12

Job	Run time
Unit tests / Unit tests (swift:5.9-jammy, 5.9, true)	1m 19s
Unit tests / Unit tests (swift:5.10-jammy, 5.10, true)	1m 39s
Unit tests / Unit tests (swift:6.0-jammy, 6.0, true)	1m 33s
Unit tests / Unit tests (swiftlang/swift:nightly-6.0-jammy, nightly-6.0, true)	2m 2s
Unit tests / Unit tests (swiftlang/swift:nightly-main-jammy, nightly-main, true)	2m 6s
Soundness / API breakage check	1m 38s
Soundness / Broken symlinks check	4s
Soundness / Documentation check	33s
Soundness / Format check	37s
Soundness / License headers check	9s
Soundness / Python lint check	5s
Soundness / Shell check	42s
Soundness / Unacceptable language check	3s
Soundness / YAML lint check	4s
Cxx interop / Cxx interop / Windows (6.0)	3s
Cxx interop / Cxx interop / Linux (5.9)	1m 31s
Cxx interop / Cxx interop / Windows (nightly-6.0)	8s
Cxx interop / Cxx interop / Linux (5.10)	1m 26s
Cxx interop / Cxx interop / Windows (nightly-main)	2s
Cxx interop / Cxx interop / Linux (6.0)	1m 23s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 47s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 53s
	20m 47s

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