perf(debug): memory of the process and of its parts in the debug panel: resident, peak and private memory, card memory (GL_NVX_gpu_memory_info), the copies kept by the textures, geometry banks, models, scenery shapes and lines, sleepers and sound buffers

CMakeLists.txt

@@ -95,6 +95,7 @@ set(SOURCES
 "model/Texture.cpp"
 "utilities/Timer.cpp"
 "utilities/workerpool.cpp"
+"utilities/memorystats.cpp"
 "world/Track.cpp"
 "world/TrackSleepers.cpp"
 "world/TrackBlend.cpp"