More detailed performance information

With 21.1 we got an FPS indicator. It would be nice to include some other information as well, specifically information that can help pilots identify what is causing low frame rates and/or high RAM usage. Example of things that could be included:

  • Size of loaded aircraft textures
  • Size of loaded terrain textures
  • Number of planes in sight, and number of planes on map/with a white square
  • Time spent on rendering different things each frame

The existing FPS settings would be changed to three options - no, FPS only, detailed.