adopt github actions #16

Job	Run time
Unit tests / Windows (6.0)	1s
Unit tests / Linux (5.9)	24s
Unit tests / Windows (nightly-6.0)	1s
Unit tests / Linux (5.10)	2m 11s
Unit tests / Windows (nightly-main)	2s
Unit tests / Linux (6.0)	2m 13s
Unit tests / Linux (nightly-6.0)	2m 30s
Soundness / API breakage check	0s
Soundness / Broken symlinks check	3s
Soundness / Documentation check	1m 15s
Soundness / Format check	41s
Soundness / License headers check	9s
Soundness / Python lint check	5s
Soundness / Shell check	36s
Unit tests / Linux (nightly-main)	2m 32s
Soundness / Unacceptable language check	2s
Soundness / YAML lint check	3s
	12m 48s

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