Recreation of Houdini lattice node with OpenGL rendering and minimal unit testing.

Requirements:

• OpenGL 3.3
• glfw window library
• glew function loading library
• glm math library
• Catch2 3 unit testing framework

Warning: mesh files used in main.cpp are not included.

Another warning: by default, demo works only in release mode and tests work only in debug mode. That is because I do not know how to make conditional compilation definitions with CMake and Catch2 does not compile in release mode for some reason.