Now can move camera in line editor mode, closes #2

src/modules/stream/world_editor.cpp

@@ -434,6 +434,8 @@ void WorldEditor::_unhandled_input(const Ref<InputEvent> &event)
 			}
 		}
 	}
+	if (current_mode == MODE_ROAD_LINES)
+		road_lines_editor->handle_input();
 }
 
 void WorldEditor::world_exited()