New Sign Up Page Design

[adityapat24]

ℹ️ Issue

Closes #297

📝 Description

Created new designs for the sign up page

Briefly list the changes made to the code:

1. Created new folder for all files related to sign up
2. Implemented frontend functionality for all components and text fields
3. Added functionality for checking if passwords are valid based on rules
4. Ensured that sign up button was disabled until all fields were entered

✔️ Verification

Manual testing and entering in values

[alexbhchoi]

GOAT

[prooflesben]

lgtm