workflows: Run unit tests using GitHub Actions #22

Job	Run time
Test / Linux (5.8 - jammy)	4m 33s
Test / Linux (5.9 - jammy)	5m 0s
Test / Windows (${{ matrix.swift_version }} - ${{ ((inputs.enable_windows_docker && contains(matrix.swift_version, 'nightly') && 'windows-2019') \|\| 'windows-2022') }})	0s
Test / Linux (5.10 - jammy)	5m 14s
Test / Linux (6.0 - jammy)	5m 34s
Test / Linux (nightly-main - jammy)	6m 43s
Test / Linux (nightly-6.1 - jammy)	6m 50s
Soundness / API breakage check	0s
Soundness / Unacceptable language check	2s
Soundness / Documentation check	42s
Soundness / Broken symlinks check	2s
Soundness / Format check	31s
Soundness / License headers check	3s
Soundness / Python lint check	5s
Soundness / Shell check	31s
Soundness / YAML lint check	2s
	35m 52s

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