[Feature idea] - Drawing on a map

[mqbar]

It would be great if we could draw simple shapes like circles (for example, if someone showed you a spawn waypoint and you could quickly draw a rough radius to find its location). Triangles and squares would also be useful. Brush and line tools would be helpful as well. It would be better for players to be able to quickly draw on the map without exporting it to paint or Krita or doing anything else.