List of add-ons in the repository

[NikosAlexandris]

It would be nice to have an overview/list of all addons in the repository's landing page. Like, have a section Addons in the repository's README.md file and eventually subsections for

• Database
• Display
• Generic
• Imagery
• Miscellaneous
• 3D_Raster
• Raster
• Temporal
• Vector

much like in the https://grass.osgeo.org/grass78/manuals/addons/ page(s).

[neteler]

Feel free to open a pull request...

[NikosAlexandris]

Feel free to open a pull request...

To start with... #573

[wenzeslaus]

The new hopefully structure makes it little easier to discover what is in the repo. We already have a auto-generated list which is usually up to date (the linked manuals/addons/ page). Linking the list in the readme seems appropriate as you did in #573. A list in readme would require additional maintenance if it would be manually added. If something else is needed, I suggest to consider generating that something in GitHub Actions and publishing through gh-pages branch.