Create registration workflow

[nilaymaj]

Create two new screens:

1. Registration page: User can enter his/her roll no and click Register. When the user clicks register, send a request to the registration route in the backend. (this will send a verification mail to the user).
2. Set password page: Get the unique verification token from the URL's query part. Allow the user to set a new password, and send a request with this password and the token to the set password route in the backend. If response is success, show something like "Password set" and a button to redirect the user to the actual app.

Note that these screens must be outside of the main app. You can add a wrapper outside the main app component that uses React Router to show the right screen - up to you. Feel free to ping me if you need any help.

[bhagwatgarg]

I'll work on it.