Add msys2 option #118

Job	Run time
setup-alire (ubuntu-latest, stable, true)	22s
setup-alire (ubuntu-latest, stable, false)	23s
setup-alire (ubuntu-latest, nightly, true)	37s
setup-alire (ubuntu-latest, nightly, false)	21s
setup-alire (ubuntu-latest, source, true)	3m 9s
setup-alire (ubuntu-latest, source, false)	3m 2s
setup-alire (macos-12, stable, true)	28s
setup-alire (macos-12, stable, false)	25s
setup-alire (macos-12, nightly, true)	13s
setup-alire (macos-12, nightly, false)	11s
setup-alire (macos-12, source, true)	5m 20s
setup-alire (macos-12, source, false)	4m 29s
setup-alire (macos-14, stable, true)	32s
setup-alire (macos-14, stable, false)	38s
setup-alire (macos-14, nightly, true)	12s
setup-alire (macos-14, nightly, false)	12s
setup-alire (macos-14, source, true)	5m 32s
setup-alire (macos-14, source, false)	6m 15s
setup-alire (windows-latest, stable, true)	3m 36s
setup-alire (windows-latest, stable, false)	1m 27s
setup-alire (windows-latest, nightly, true)	3m 45s
setup-alire (windows-latest, nightly, false)	1m 23s
setup-alire (windows-latest, source, true)	9m 19s
setup-alire (windows-latest, source, false)	7m 11s
	59m 2s

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