Add support for Windows (#30) #75

Job	Run time
phpstan (7.4)	17s
phpstan (8.3)	14s
tests (ubuntu-latest, 8.3, lowest)	17s
tests (ubuntu-latest, 8.4, lowest)	15s
tests (ubuntu-latest, 8.0, lowest)	14s
tests (ubuntu-latest, 7.4, highest)	12s
tests (windows-latest, 8.1, lowest)	40s
tests (ubuntu-latest, 8.3, highest)	13s
tests (windows-latest, 8.3, lowest)	44s
tests (ubuntu-latest, 8.2, highest)	14s
tests (ubuntu-latest, 8.0, highest)	12s
tests (windows-latest, 7.4, highest)	41s
tests (windows-latest, 8.2, lowest)	41s
tests (ubuntu-latest, 8.5, highest)	13s
tests (ubuntu-latest, 8.1, highest)	15s
tests (windows-latest, 8.0, lowest)	39s
tests (ubuntu-latest, 8.1, lowest)	12s
tests (windows-latest, 8.0, highest)	54s
tests (ubuntu-latest, 8.2, lowest)	12s
tests (ubuntu-latest, 8.5, lowest)	15s
tests (windows-latest, 8.3, highest)	47s
tests (windows-latest, 8.5, highest)	57s
tests (windows-latest, 8.4, highest)	45s
tests (windows-latest, 8.4, lowest)	43s
tests (ubuntu-latest, 7.4, lowest)	14s
tests (windows-latest, 7.4, lowest)	48s
tests (ubuntu-latest, 8.4, highest)	17s
tests (windows-latest, 8.2, highest)	43s
tests (windows-latest, 8.5, lowest)	36s
tests (windows-latest, 8.1, highest)	48s
	14m 12s

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