docs: Add marketing app usage instructions
Created by: arjunsinghy96
Adds documentation for the marketing app.
Related Tickets
Testing Instructions
- Checkout to this branch
- Run
make docs-serve
to start the local documentation server. - Visit http://localhost:5001/marketing_usage.html
- Verify that the documentation contains the information from this document
Author Notes
- I have removed two images from document as they were just admin panel images and were redundant.