Texture refactor

-Texture renamed to Texture2D
-TextureLayered as base now inherits 2Darray, cubemap and cubemap array
-Removed all references to flags in textures (they will go in the shader)
-Texture3D gone for now (will come back later done properly)
-Create base rasterizer for RenderDevice, RasterizerRD

scene/gui/spin_box.h

@@ -62,7 +62,7 @@ class SpinBox : public Range {
 
 	void _line_edit_focus_exit();
 
-	inline void _adjust_width_for_icon(const Ref<Texture> &icon);
+	inline void _adjust_width_for_icon(const Ref<Texture2D> &icon);
 
 protected:
 	void _gui_input(const Ref<InputEvent> &p_event);