Add ability to include swift versions #141

Job	Run time
Test with Docker / Windows (5.9 - windows-2022)	14m 11s
Test without Docker / Windows (5.9 - windows-2022)	4m 44s
Test with Docker / Linux (5.8 - jammy)	25s
Test with Docker / Windows (6.0 - windows-2022)	19m 3s
Test without Docker / Linux (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test without Docker / Windows (6.0 - windows-2022)	4m 36s
Test with Docker / Linux (5.9 - jammy)	26s
Test with Docker / Windows (nightly - windows-2019)	8m 59s
Test with Docker / Linux (5.10 - jammy)	26s
Test without Docker / Windows (nightly - windows-2022)	4m 39s
Test with Docker / Windows (nightly-6.0 - windows-2019)	8m 41s
Test without Docker / Windows (nightly-6.0 - windows-2022)	3m 55s
Test with Docker / Linux (6.0 - jammy)	35s
Test with Docker / Linux (nightly-main - jammy)	35s
Test with Docker / Linux (nightly-6.0 - jammy)	32s
Soundness / Documentation check	4s
Soundness / API breakage check	0s
Soundness / Broken symlinks check	3s
Soundness / Format check	0s
Soundness / License headers check	3s
Soundness / Python lint check	5s
Soundness / Shell check	4s
Soundness / Unacceptable language check	2s
Soundness / YAML lint check	3s
	1h 12m 11s

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