feat: Add Google Pay through Braintree #552

Job	Run time
Unit test (Chrome)	1m 32s
Unit test (Firefox)	1m 30s
Unit test (Electron)	1m 33s
Check	54s
Integration test with react-recurly	53s
Unit test (Safari-Remote)	5m 15s
Unit test (Edge-Remote)	7m 15s
Unit test (iOS-16-Remote)	2m 50s
Unit test (iOS-15-Remote)	5m 42s
Unit test (Android-13-Remote)	5m 59s
Unit test (Android-12-Remote)	6m 31s
Unit test (Android-11-Remote)	3m 14s
End-to-end test (Chrome-Remote)	2m 1s
End-to-end test (Firefox-Remote)	3m 23s
End-to-end test (Safari-Remote)	4m 30s
End-to-end test (Edge-Remote)	3m 21s
End-to-end test (iOS-16-Remote)	5m 0s
End-to-end test (iOS-15-Remote)	5m 22s
End-to-end test (Android-13-Remote)	2m 54s
End-to-end test (Android-12-Remote)	3m 14s
End-to-end test (Android-11-Remote)	3m 9s
Verify required checks	1s
Publish artifacts	31s
	1h 16m 34s

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