Add OAuth2 example apps (#854) #1973

Job	Run time
setup	5s
test (./examples/with-localstorage)	3m 3s
test (./examples/with-legacy-2fa)	4m 19s
test (./examples/with-multifactorauth-phone-chooser)	5m 35s
test (./examples/with-thirdpartyemailpassword-passwordless)	4m 25s
test (./examples/with-emailverification-then-password-thirdpartyemailpassword)	4m 2s
test (./examples/with-emailverification-with-otp)	4m 10s
test (./examples/with-phone-password-mfa)	4m 45s
test (./examples/with-one-login-per-subdomain)	4m 7s
test (./examples/with-no-session-on-sign-up-thirdpartyemailpassword)	3m 54s
test (./examples/with-sign-in-up-split-emailpassword)	4m 0s
test (./examples/with-netlify)	4m 37s
test (./examples/with-update-email-post-verification)	4m 55s
test (./examples/with-cli-login)	7m 16s
test (./examples/with-hash-router)	2m 58s
test (./examples/with-phone-password)	4m 10s
test (./examples/with-i18next)	4m 4s
test (./examples/with-multiple-email-sign-in)	4m 7s
test (./examples/with-multifactorauth-recovery-codes)	5m 32s
test (./examples/with-svelte-react-thirdpartyemailpassword)	3m 47s
test (./examples/with-account-linking)	3m 58s
test (./examples/with-emailpassword-vercel)	4m 7s
	1h 31m 56s

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