[FRONTEND] Allow users to update their email on profile page

[bcho892]

Is your feature request related to a problem? Please describe. Since the email is separate from their firebase document it would likely be better to allow a user to update it via a confirmation email:

• https://firebase.google.com/docs/reference/js/v8/firebase.User#verifybeforeupdateemail

BEFORE MERGING

• [ ] Storybooks created where possible
• [ ] Tested with nock if data fetching
• [ ] Tests written for critical interactions
• [ ] PR Reviewed (For non-trivial changes)
• [ ] Changes tested after rebasing on master or merging in master (hint: git fetch origin master:master, then git rebase master or git merge master)
• [ ] All required PR checks passing