feat: Sign Up Page

[JennaXiao3]

handles #85

Description

What is the purpose of your change?

• added a Sign Up page

What areas of the application does this change impact? (changes API, folder structure, etc)

• None

What features/fixes are deferred/not handled in this PR?

• adding user to database (backend)

Checklist

• [ ] Adds unit tests
• [ ] Has a work item linked to the PR

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[leafie8]

LGTM