E2E test improvements, mobile environment and new device test

[hcho112]

This PR is branched out from #233 It contains following changes:

1. Use node-version 18.x instead of 18
2. Added mobile environments, iphone and andriod
3. Added another complex test on devices page
4. Syntax improvements

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Name	Status	Preview	Comments	Updated (UTC)
fast-auth-signer	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 18, 2024 7:00am

[Pessina]

Amazing work @hcho112 , it's much more stable. Thanks you!