Add initial generators documentation

[rszamszur]

Checklist:

• Added tests for changed code where applicable.
• Documentation reflects the changes where applicable.
• Updated the CHANGELOG.md file with your changes.
• My PR is ready to review.

Resolves: #75

Description of the changes being introduced by the pull request:

[github-actions]

🚀 Deployed on https://62a1148dc15b5d0592d9282c--fastapi-mvc.netlify.app

[codecov-commenter]

Codecov Report

Merging #101 (6dd3fb7) into master (98670ed) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #101   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           40        40           
  Lines          800       800           
=========================================
  Hits           800       800           

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