Migrate to GitHub Actions #5

Job	Run time
Soundness / Format check	32s
Soundness / API breakage check	3m 31s
Soundness / Broken symlinks check	3s
Soundness / License headers check	3s
Soundness / Documentation check	2m 29s
Soundness / Unacceptable language check	4s
Soundness / YAML lint check	3s
Soundness / Python lint check	5s
Soundness / Shell check	34s
Cxx interop / Cxx interop / Linux (5.9)	2m 18s
Cxx interop / Cxx interop / Linux (5.10)	2m 5s
Cxx interop / Cxx interop / Linux (6.0)	2m 21s
Cxx interop / Cxx interop / Windows (6.0)	4s
Cxx interop / Cxx interop / Linux (nightly-6.0)	2m 53s
Cxx interop / Cxx interop / Windows (nightly-6.0)	2s
Cxx interop / Cxx interop / Linux (nightly-main)	2m 55s
Cxx interop / Cxx interop / Windows (nightly-main)	2s
Unit tests / Unit tests / Linux (5.9)	2m 8s
Unit tests / Unit tests / Linux (5.10)	2m 0s
Unit tests / Unit tests / Windows (6.0)	3s
Unit tests / Unit tests / Windows (nightly-6.0)	2s
Unit tests / Unit tests / Windows (nightly-main)	3s
Unit tests / Unit tests / Linux (6.0)	2m 16s
Unit tests / Unit tests / Linux (nightly-6.0)	2m 43s
Unit tests / Unit tests / Linux (nightly-main)	2m 54s
	32m 13s

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