ci: upload coverage to coveralls #813

Job	Run time
Examples	1m 55s
Library (evolution)	32s
xcodebuild (16) (test, IOS, 16.2)	2m 23s
xcodebuild (15) (test, IOS, 15.4)	3m 15s
xcodebuild (16) (test, MACOS, 16.2)	1m 25s
xcodebuild (15) (test, MAC_CATALYST, 15.4)	1m 11s
xcodebuild (16) (IOS, 16.2)	2m 7s
xcodebuild (15) (test, MACOS, 15.4)	58s
xcodebuild (15) (test, TVOS, 15.4)	1m 22s
xcodebuild (16) (MACOS, 16.2)	1m 18s
xcodebuild (15) (test, VISIONOS, 15.4)	2m 10s
xcodebuild (15) (test, WATCHOS, 15.4)	1m 35s
xcodebuild (15) (IOS, 15.2)	1m 37s
xcodebuild (15) (IOS, 15.4)	1m 13s
xcodebuild (15) (MAC_CATALYST, 15.4)	1m 37s
xcodebuild (15) (MACOS, 15.2)	2m 1s
xcodebuild (15) (MACOS, 15.4)	1m 22s
xcodebuild (15) (TVOS, 15.4)	1m 26s
xcodebuild (15) (VISIONOS, 15.4)	2m 6s
xcodebuild (15) (WATCHOS, 15.4)	1m 49s
	33m 22s

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