[Finishes #187355101] User Login By Google

[Christian-Ishimwe]

What does this PR do?

This PR allows User to Register and Sign in By Using Google

Description of Task to be completed?

The Task was creating the feature which allows user to Register By using the Google api Aouth2, Passport JS and user will be able to login by using The google

How should this be manually tested?

1.Install the required Packages
2.Set the node environments as .env.example
3. visit https://console.cloud.google.com/ for creating the the project
4. for this for getting started and creating the credentials: https://www.passportjs.org/packages/passport-google-oauth20/

when you successful created credentials, use the browser to visit : http://127.0.0.1:8000/auth/ , then register
after that, you might need to return to that page, when you click register again, you will receive the Token to be used:

{"message":"User signed in!","userToken":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiI2YWQxZjBkYS1lMGNiLTRlNDYtOTUyNy1jYjY2MThhZmRmN2MiLCJmaXJzdE5hbWUiOiJJU0hJTVdFIiwibGFzdE5hbWUiOiJDaHJpc3RpYW4iLCJyb2xlIjoidXNlciIsImlhdCI6MTcxMzMzNTY2MCwiZXhwIjoxNzEzOTQwNDYwfQ.0Tzq5QYq5ltEkKMosY23v_iysp6q1l5htskn4R54UUM"}

copy that bearer Token, and use it in testing in Postman on this endpoint:
http://127.0.0.1:8000/users/profile

What are the relevant pivotal tracker/Trello stories?

My Story tracker: #187355101

### NOTE:
Make sure to use the callback within google console as: http://127.0.0.1:8000/auth/google/callback
Use the PORT of 8000

[render]

Your Render PR Server URL is https://e-commerce-ones-and-zeroes-bn-8-pr-36.onrender.com.

Follow its progress at https://dashboard.render.com/web/srv-cous1c7jbltc739kr940.

[render]

Your Render PR Server URL is https://e-commerce-ones-and-zeroes-bn-2-pr-36.onrender.com.

Follow its progress at https://dashboard.render.com/web/srv-cous1c7jbltc739kr99g.

[render]

Your Render PR Server URL is https://e-commerce-ones-and-zeroes-bn-pr-36.onrender.com.

Follow its progress at https://dashboard.render.com/web/srv-cp13nvol6cac73b0e49g.

[UmuhireJessie]

Good work @Christian-Ishimwe, please squash the commits