More includes for Linux
Update build script to copy assets and compile shaders
Added base code directory as include path
Added FS_SystemPath
Made asset loading work directory agnostic
Added new assets
Loaded all texture assets into game state
Loaded the basic pipeline
Setup a hard-coded quad to test drawing
Created a very jank vertex struct
Added ReadEntireFile for filesystem
Added getting file size from file handle
Added a descriptor pool to each in flight frame
Changed Vk_BufferCreate to handle multiple uses
Added shader building to the windows.bat build script
