WIP: Updating code to follow laupentin's code review.

Done:
- Moved custom map structures to their own objcommon header file
- Updated GfxLightGridRow struct
- Reverted shader_bin file path
- Renamed Project Creator to BSP Creator
- Removed model loading from BSP creator
- Cleaned up BSP Creator and updated the names of structs
WIP:
- Update BSP calculation code to be more readable and use unique/shared ptrs

src/ObjLoading/Game/T6/CustomMap/BSPCreator.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "Game/T6/Maps/CustomMaps.h"
+#include "SearchPath/ISearchPath.h"
+
+class BSPCreator
+{
+public:
+    static CustomMapBSP* createCustomMapBSP(std::string& mapName, ISearchPath& searchPath);
+};