Converts all game, gui editor, and system classes to utilize assets

Processed core, tools and default modules to utilize assets
Converted all console types that were string based, such as TypeImageFilename to utilize const char*/the string table, which avoids a lot of type swapping shenanigans and avoids string corruption
Removed unneeded MainEditor mockup module
Removed some unused/duplicate image assets from the tools

Engine/source/gui/game/guiChunkedBitmapCtrl.h

@@ -7,6 +7,8 @@
 #include "gfx/gfxDrawUtil.h"
 #include "console/engineAPI.h"
 
+#include "T3D/assets/ImageAsset.h"
+
 class GuiChunkedBitmapCtrl : public GuiControl
 {
 private:
@@ -14,8 +16,10 @@ private:
    void renderRegion(const Point2I &offset, const Point2I &extent);
 
 protected:
-   StringTableEntry mBitmapName;
-   GFXTexHandle mTexHandle;
+
+   DECLARE_IMAGEASSET(GuiChunkedBitmapCtrl, Bitmap, onImageChanged, GFXDefaultGUIProfile);
+   DECLARE_IMAGEASSET_SETGET(GuiChunkedBitmapCtrl, Bitmap);
+
    bool  mUseVariable;
    bool  mTile;
 
@@ -34,4 +38,6 @@ public:
    void setBitmap(const char *name);
 
    void onRender(Point2I offset, const RectI &updateRect);
-};
+
+   void onImageChanged() {}
+};