Archived old OpenGL gaming core.

Kajetan Johannes Hammerle ecbdaff9ba planes and tests 4 éve
math ecbdaff9ba planes and tests 4 éve
tests ecbdaff9ba planes and tests 4 éve
utils 352b738398 matrix stack and tests 4 éve
Main.cpp ecbdaff9ba planes and tests 4 éve
meson.build ecbdaff9ba planes and tests 4 éve