Feature Request - Add Generator for Shrine Gem

[anew-bhav]

Currently we need to write configurations for shrine gem

The request is to add a boring generator for this gem.

[anew-bhav]

If we agree on adding this gem, I would like to work on that

[abhaynikam]

Sounds good to me @anubhav8421. Feel free to open a PR for a generator. Assigning the issue to you.