Add GitHub Actions #37

Xcode test results

Total	Passed	Failed	Skipped	Expected Failure	⏱️ Time
41	41	0	0	0	0.14s

All tests passed 🎉

				⏱️
4 (100%)	0 (0%)	0 (0%)	0 (0%)	0.00s

				⏱️
1 (100%)	0 (0%)	0 (0%)	0 (0%)	0.00s

	`testErrorType()`

				⏱️
34 (100%)	0 (0%)	0 (0%)	0 (0%)	0.03s

	`testAllKeys()`
	`testAuthenticationPolicy()`
	`testContains()`
	`testDefaultInitializer()`
	`testDescription()`
	`testErrorHandling()`
	`testGenericPassword()`
	`testGenericPasswordSubscripting()`
	`testGenericPasswordWithAccessGroup1()`
	`testGenericPasswordWithAccessGroup2()`
	`testGetPersistentRef()`
	`testIgnoringAttributeSynchronizable()`
	`testIgnoringAttributeSynchronizableBackwardCompatibility()`
	`testInitializerWithAccessGroup()`
	`testInitializerWithServer()`
	`testInitializerWithServerAndAuthenticationType()`
	`testInitializerWithService()`
	`testInitializerWithServiceAndAccessGroup()`
	`testInternetPassword()`
	`testInternetPasswordSubscripting()`
	`testInternetPasswordWithAccessGroup1()`
	`testInternetPasswordWithAccessGroup2()`
	`testProperties()`
	`testRemoveData()`
	`testRemoveString()`
	`testSetAttributes()`
	`testSetData()`
	`testSetString()`
	`testSetStringWithComment()`
	`testSetStringWithCustomService()`
	`testSetStringWithLabel()`
	`testSetStringWithLabelAndComment()`
	`testStringConversionError()`
	`testSubscripting()`

				⏱️
2 (100%)	0 (0%)	0 (0%)	0 (0%)	0.12s

	`testGeneratePassword()`
	`testGetSharedPassword()`