meta: Add privacy policy

web: Allow customization of listen port

Signed-off-by: Cara Salter <cara@devcara.com>

Enable customizing success URL

Adds a new .env key that will contain the URL to redirect to when
someone successfully verifies.

License under AGPL

Initial Commit

Authenticates users against Azure, then Discord, then kicks off the
discord roles and DMing while redirecting the user to wpi.edu