Migrate to GitHub Actions #9

Job	Run time
Unit tests / Unit tests (swift:5.9-jammy, 5.9, true)	1m 28s
Unit tests / Unit tests (swift:5.10-jammy, 5.10, true)	1m 25s
Unit tests / Unit tests (swift:6.0-jammy, 6.0, true)	1m 41s
Unit tests / Unit tests (swiftlang/swift:nightly-6.0-jammy, nightly-6.0, true)	1m 40s
Unit tests / Unit tests (swiftlang/swift:nightly-main-jammy, nightly-main, true)	1m 44s
Soundness / API breakage check	1m 19s
Soundness / Broken symlinks check	3s
Soundness / Documentation check	38s
Soundness / License headers check	3s
Soundness / Unacceptable language check	4s
Soundness / Format check	31s
Soundness / Python lint check	9s
Soundness / YAML lint check	5s
Soundness / Shell check	35s
Cxx interop / Cxx interop / Windows (6.0)	4s
Cxx interop / Cxx interop / Linux (5.9)	1m 13s
Cxx interop / Cxx interop / Windows (nightly-6.0)	3s
Cxx interop / Cxx interop / Linux (5.10)	1m 12s
Cxx interop / Cxx interop / Windows (nightly-main)	1s
Cxx interop / Cxx interop / Linux (6.0)	1m 7s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 18s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 14s
	17m 37s

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