Allow custom components in marker popup

[jhuber-de]

Is your feature request related to a problem? Please describe.
I'm working on a project where a user selects an item on a map and than should get additional information about the selected item.

Describe the solution you'd like
It would be nice to be able to add custom components to the popup of a marker. This would make the popup incredibly flexible. Here is an example of what I'm talking about:

Additional context
I have no idea if this is even possible but if it is I imagine it would be an awesome feature.