Memory+

Significantly reduced dynamic allocations, a reduction proposed in issue https://github.com/Equilibrium-Games/Flounder/issues/9. Resources and mult-use objects now use shared pointers for memory management, and other significant code cleanups.

The following folders and objects still need cleaning:

Animations/
Files/
Materials/PipelineMaterial.hpp
Models/
Renderer/
Objects/GameObject.hpp
Scenes/
Uis/