Adds coveralls reporting to CI #567

Job	Run time
Integration test with react-recurly	57s
Unit test (Chrome)	1m 33s
Check	54s
Unit test (Safari-Remote)	5m 34s
Unit test (Firefox)	1m 30s
Unit test (Edge-Remote)	2m 29s
Unit test (Electron)	1m 34s
Unit test (iOS-16-Remote)	2m 53s
Unit test (iOS-15-Remote)	3m 46s
Unit test (Android-13-Remote)	2m 43s
Unit test (Android-12-Remote)	6m 41s
Unit test (Android-11-Remote)	5m 13s
End-to-end test (Chrome-Remote)	2m 12s
End-to-end test (Firefox-Remote)	3m 35s
End-to-end test (Safari-Remote)	5m 11s
End-to-end test (Edge-Remote)	3m 40s
End-to-end test (iOS-16-Remote)	5m 42s
End-to-end test (iOS-15-Remote)	4m 43s
End-to-end test (Android-13-Remote)	3m 3s
End-to-end test (Android-12-Remote)	3m 7s
End-to-end test (Android-11-Remote)	3m 12s
Publish artifacts	1m 1s
Verify required checks	1s
	1h 11m 14s

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