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

editor/groups_editor.cpp

@@ -88,7 +88,7 @@ void GroupDialog::_load_nodes(Node *p_current) {
 		node->set_metadata(0, path);
 		node->set_tooltip(0, path);
 
-		Ref<Texture> icon = EditorNode::get_singleton()->get_object_icon(p_current, "Node");
+		Ref<Texture2D> icon = EditorNode::get_singleton()->get_object_icon(p_current, "Node");
 		node->set_icon(0, icon);
 
 		if (!_can_edit(p_current, selected_group)) {