everything here is some external library/header/loader for some of the functions used in this project, here is what each one does.

- glfw3.h + lib/libglfw3.a + lib/glfw3.lib - this is a window management API, we use glfw to open windows, get user input, and set OpenGL context, .lib is for windows folk.
https://www.glfw.org/download.html

- glad.h + glad.c - this is an OpenGL loader, it gives us access to all of the OpenGL functions we need and defines some of the nice constants/datatypes we might want to use
https://glad.dav1d.de/

- khrplatform.h - this is a library maintained by the khronos group which defines platform specifics. it is used by a number of other libraries for cross platform apps.
https://registry.khronos.org/