feat: add mobile splash page with buttons to trigger auth flow

[iykazrji]

Pull Request Checklist

• Did you add new tests and confirm existing tests pass? (yarn test)
• Did you update relevant docs? (docs are found in the site folder, and guidelines for updating/adding docs can be found in the contribution guide)
• Do your commits follow the Conventional Commits standard?
• Does your PR title also follow the Conventional Commits standard?
• If you have a breaking change, is it correctly reflected in your commit message? (e.g. feat!: breaking change)
• Did you run lint (yarn lint:check) and fix any issues? (yarn lint:write)
• Did you follow the contribution guidelines?

Demo

https://www.loom.com/share/56c6ee313e4f45f7bbbb98e99ee7f872?sid=e11262e6-efb9-4764-a6ba-b1c763383399

Testing Guide

• View the UI Demo app in a mobile window (using chrome tools, you can specify the device dimensions you want to test in.
• You should see the mobile splash screen implementation
• The Try It button should prompt the user to login showing the auth card in a bottom sheet view.
• The various docs links should link accordingly.

Note.

A successful login would show a logout button as the rest of the mobile implementation isn't present in this PR.

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PR-Codex overview

This PR primarily focuses on enhancing the UI of the application by adjusting styles, adding a new MobileSplashPage component, and implementing authentication modal functionality.

Detailed summary

• Updated borderRadius utilities in borders.ts.
• Modified padding in TopNav component.
• Added MobileSplashPage component with a gradient header and image.
• Integrated authentication modal in MobileSplashPage.
• Included a logout button in the main app layout for user management.

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[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
aa-sdk-site	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 1, 2024 10:10pm
aa-sdk-ui-demo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 1, 2024 10:10pm

[moldy530]

generally LGTM, I've updated the linter to finally run on the demo app, so make sure to run yarn lint:write from root