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/editor_data.cpp

@@ -479,7 +479,7 @@ EditorPlugin *EditorData::get_editor_plugin(int p_idx) {
 	return editor_plugins[p_idx];
 }
 
-void EditorData::add_custom_type(const String &p_type, const String &p_inherits, const Ref<Script> &p_script, const Ref<Texture> &p_icon) {
+void EditorData::add_custom_type(const String &p_type, const String &p_inherits, const Ref<Script> &p_script, const Ref<Texture2D> &p_icon) {
 
 	ERR_FAIL_COND_MSG(p_script.is_null(), "It's not a reference to a valid Script object.");
 	CustomType ct;