Change: Framerate window can now scroll and resize

src/script/api/script_window.hpp

@@ -1305,6 +1305,7 @@ public:
 		WID_FRW_TIMES_NAMES                          = ::WID_FRW_TIMES_NAMES,
 		WID_FRW_TIMES_CURRENT                        = ::WID_FRW_TIMES_CURRENT,
 		WID_FRW_TIMES_AVERAGE                        = ::WID_FRW_TIMES_AVERAGE,
+		WID_FRW_SCROLLBAR                            = ::WID_FRW_SCROLLBAR,
 	};
 
 	/** Widgets of the #FrametimeGraphWindow class. */