wishlist: kml viewer

[legrostdg]

Thanks for the app, it is really useful :-).
It would be a nice addition to be able to display kml files on top of the map.

[eUgEntOptIc44]

Since the map component of OpenTopoMapViewer is using osmdroid it should be possible to follow the following example: https://github.com/MKergall/osmbonuspack/wiki/Tutorial_4. Please note that the osmbonuspack extension is required for this.