* Use RL_QUADS/RL_TRIANGLES for single-pixel drawing
Addresses problem mentioned in
https://github.com/raysan5/raylib/issues/2744#issuecomment-1273568263
(in short: when drawing pixels using DrawPixel{,V} in camera mode,
upscaled pixel becomes a line instead of bigger pixel)
* [rtextures] Fixed scaling down in ImageTextEx
Closes#2755
* Added global audio processor
* Renamed struct member to follow naming conventions
* Added example for AttachAudioMixedProcessor
hkc