feat: pr template and contributing #2644

Job	Run time
build / build	6m 44s
validate-os / validate-os (macos-latest)	2m 15s
validate-os / validate-os (windows-latest)	3m 58s
e2e-tests / Test (1/10)	4m 9s
e2e-tests / Test (2/10)	4m 1s
e2e-tests / Test (3/10)	4m 21s
e2e-tests / Test (4/10)	3m 49s
e2e-tests / Test (5/10)	4m 31s
e2e-tests / Test (6/10)	4m 5s
e2e-tests / Test (7/10)	3m 31s
e2e-tests / Test (8/10)	6m 26s
e2e-tests / Test (9/10)	9m 19s
e2e-tests / Test (10/10)	6m 11s
e2e-tests / merge-reports	14s
	1h 3m 34s

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