Practice 3d software rendering project based on Javidx9's 3d engine series, using the PixelGameEngine

I'm planning on extending the project, and am currently reading about shadow mapping, and eventually would like to make a 3d game from scratch with this framework.

Can compile with make build and run with make run or by building and running the executable.

Note, I was, at the same time, lightly experimenting with C++20, but this should be currently compilable under C++17