Feature Request: NATO Map Symbols/Import PNG/Gif symbols

[Stiggles]

Currently the symbol selection is very limited. It would be helpful to have a selection of at least the basic NATO icons. Ideally, if there was a way to generate them algorithmically* that would be best.

An example of a generator in action: https://spatialillusions.com/unitgenerator/

Similarly, if the user were able to import icons onto the map, then outside generators for icons could be used.

A further, more difficult, application of this would be a German military symbol generator.