Google & Facebook oauth sign up and sign in

**Is your feature request related to a problem? Please describe.**
Currently, the app only accepts email sign in/signup. Having oauth would be better for the user, then user can sign in with ease.
Also there is PR for email verification, having oauth wont even need email verification. (Although that feature would be required for user sign in with their email).

**Describe the solution you'd like**
Having a google and/or Facebook oauth at sign-in page of app.

**Are you working on this? (Yes/No)**
Not right now, but if I get confirmation from maintainer, I would start working on it.