Add tests for the Swift snippets workflows #305

Job	Run time
Test / Linux (5.8 - jammy)	3m 14s
Test / Windows (5.9 - windows-2022)	11m 13s
Test / Linux (5.9 - jammy)	3m 19s
Test / Windows (6.0 - windows-2022)	11m 10s
Test / Linux (5.10 - jammy)	3m 3s
Test / Linux (6.0 - jammy)	4m 21s
Test / Windows (nightly-6.0 - windows-2019)	16m 34s
Test / Linux (nightly-6.0 - jammy)	4m 29s
Soundness / API breakage check	0s
Soundness / Broken symlinks check	5s
Soundness / Documentation check	0s
Soundness / Format check	0s
Soundness / License headers check	0s
Soundness / Python lint check	5s
Soundness / Shell check	35s
Soundness / Unacceptable language check	3s
Soundness / YAML lint check	10s
	58m 21s

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