[auth] Reorganize auth routes

[adityapawar1]

What's new in this PR

• Reorganize the file structure so each auth route has its own folder and styles file
• Does not change functionality

Relevant Links

None

Notion Sprint Task

Notion task

Online sources

None

Related PRs

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How to review

• Try navigating to each auth screen
• Since sign up only work on a newer version of the app in another PR that hasn't been merged yet, I just tested navigating to sign up, login, and forgot password. Since I did the same thing for those three routes as I did for verify account and onboarding, I'm assuming that they should also work, but they have not been tested.

Next steps

None

Tests Performed, Edge Cases

• Tested every auth screen except verify account and onboarding.

Screenshots

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CC: @akshaynthakur

[akshaynthakur]

This looks good to me! We'll just wait until #35 is merged in so that we can fully test all of the routes properly.

[adityapawar1]

I think this should be ready to merge @akshaynthakur