Create email sending endpoints with magic link auth

[MikeLautensack]

TO-DO

• [ ] Write email dispatch endpoint

• [ ] Replace "EmailProvider" from next-auth v4 with new provider that is supported in next-auth v5

• [ ] Write new sendVerificationRequestMethod

• [ ] Write send email endpoint

• [ ] Test email dispatch endpoint

• [ ] Test new sendVerificationRequest function

• [ ] Test send email endpoint

• [ ] Test email magic link