ci(github): move connect webextension example tests to GitHub Actions #778

Job	Run time
extract-branch	2s
build-deploy / build-deploy-connect	3m 8s
popup-pages / web	3m 9s
popup-pages / webextension	0s
browser-support / web	3m 6s
passphrase / webextension	9m 14s
methods / web	11m 53s
methods / webextension	17m 46s
permissions / web	2m 57s
browser-support / webextension	0s
passphrase / web	4m 22s
permissions / webextension	0s
popup-close / web	5m 47s
popup-close / webextension	11m 0s
transport / web	3m 11s
unchained / web	4m 52s
transport / webextension	0s
unchained / webextension	0s
webextension-examples / web	0s
webextension-examples / webextension	8m 8s
	1h 28m 35s

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