Geographic maps in Joplin

I would like to display simple geographic maps with markers or tracks in Joplin. Ideally offline and open source. I tried to search in some directions:

  1. Write a plugin to render geojson. I managed to write some code based on geojson-to-svg - npm but obviously, it only displays the markers and not the background map. Getting the correct map section offline is way beyond my skills.

  2. Export an image from an external app (including the markers / tracks as metadata for later editing). I couldn't find anything.

  3. In the forum, there is only this partially related thread.

Does anyone use geographic maps in Joplin? If so, how does your workflow look like?

Edit: Similar features in other apps: