Expose scene unique id functionality in Resource

Author: Ryan-000

core/io/resource.cpp

@@ -449,6 +449,10 @@ void Resource::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_local_scene"), &Resource::get_local_scene);
 	ClassDB::bind_method(D_METHOD("setup_local_to_scene"), &Resource::setup_local_to_scene);
 
+	ClassDB::bind_static_method("Resource", D_METHOD("generate_scene_unique_id"), &Resource::generate_scene_unique_id);
+	ClassDB::bind_method(D_METHOD("set_scene_unique_id", "id"), &Resource::set_scene_unique_id);
+	ClassDB::bind_method(D_METHOD("get_scene_unique_id"), &Resource::get_scene_unique_id);
+
 	ClassDB::bind_method(D_METHOD("emit_changed"), &Resource::emit_changed);
 
 	ClassDB::bind_method(D_METHOD("duplicate", "subresources"), &Resource::duplicate, DEFVAL(false));
@@ -459,6 +463,7 @@ void Resource::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "resource_local_to_scene"), "set_local_to_scene", "is_local_to_scene");
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "resource_path", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR), "set_path", "get_path");
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "resource_name"), "set_name", "get_name");
+	ADD_PROPERTY(PropertyInfo(Variant::STRING, "resource_scene_unique_id"), "set_scene_unique_id", "get_scene_unique_id");
 
 	MethodInfo get_rid_bind("_get_rid");
 	get_rid_bind.return_val.type = Variant::RID;