Archived old OpenGL gaming core.

Kajetan Johannes Hammerle 1586ab7509 stack + tests, feedback in list if add works, remove from list is safe vor 4 Jahren
math 9128c83af9 clean up vor 4 Jahren
tests 1586ab7509 stack + tests, feedback in list if add works, remove from list is safe vor 4 Jahren
utils 1586ab7509 stack + tests, feedback in list if add works, remove from list is safe vor 4 Jahren
Main.cpp 1586ab7509 stack + tests, feedback in list if add works, remove from list is safe vor 4 Jahren
meson.build 1586ab7509 stack + tests, feedback in list if add works, remove from list is safe vor 4 Jahren