Address documentation improvement suggestions from community feedback

[mariajgrimaldi]

Description

Feedback from a recent developer experience survey has highlighted several areas where the current documentation can be improved to better support developers using the Open edX platform. This issue addresses these concerns by enhancing the documentation to make it more comprehensive, accessible, and user-friendly.

The overall objective of this issue is to address all community feedback to improve the library documentation.

Tasks

Beta Give feedback

1. How to create a filter from start to finish #183
   documentation +1
2. How Open edX filters work #184
   documentation +1
3. How to implement filters with long term support #185
   documentation +1
4. Templates for creating new filters #186
   documentation +1
5. Which filters are in each named-release #187
   documentation +1
6. Where each Open edX Filter is being executed #188
   documentation +1
7. Cross-repo collection of all filters in the ecosystem #189
   documentation +1
8. Improve how to contribute and review expectations #191
   documentation +1
9. Include comprehensive list real life usage #190
   documentation +1
10. How to implement organization-scoped filters #192
    documentation +1
11. Document deprecation process #73
    documentation +1