add register button to login page

[bcho892]

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 92d0bff):

https://uasc-ceebc--pr699-646-frontend-add-reg-7wzxx3xr.web.app

_{(expires Mon, 05 Aug 2024 00:13:05 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: 36296ceaed1d43e92e7d5e81a72a7bd987560bfa}

[jeffplays2005]

Just a note as there seems to be a bug, when clicking register, sometimes prompts user to enter a field.

Tips/info to reproduce:

• Using safari(may be different in other browsers)
• Same issue in multiple browsers

1. Clicking firebase preview channel
2. Clicking log in button
3. Click register