Adding oauthn

[ZohebShaikh]

Alternative to the authentication were investigated:-

Client Libraries

• Authomatic
• Python Social Auth is an OAuth and OAuth2 client for a multitude of services.
• Authlib has built-in OAuth 2 client for Flask and Django.
• Requests-OAuthlib has OAuth library support for Python Requests.
• mozilla-django-oidc is a lightweight Django authentication and access management library for integration with OpenID Connect enabled authentication services.

In the end I decided to not use them as we just need to make 2 requests and there is not that much error handling required as well ... We can look into integrating on of the above mentioned alternatives for the OAuth device flow integration.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.00%. Comparing base (fff3ea7) to head (1243807).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #690      +/-   ##
==========================================
+ Coverage   92.33%   93.00%   +0.67%     
==========================================
  Files          35       36       +1     
  Lines        1800     1974     +174     
==========================================
+ Hits         1662     1836     +174     
  Misses        138      138              

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