[FEATURE] Implementation of OAuth.

[anand346]

Is your feature request related to a problem? Please describe.
Currently at the build time, fetching issues for all languages hit the API rate limit, due to which the build fails as we are using SSG method to generate pages for all languages.

Describe the solution you'd like
To solve this problem we can implement OAuth to extend the rate limit to 5000 requests per hour.

Describe alternatives you've considered
Alternative can be to generate multiple personal access token and then use those tokens page wise for every page so that we dont hit the rate limit.

Additional context
We would need the design of authentication page first so that the implementation gets easy.