refactor: Change return type for IconifyWindow

This one is a little tricky. While the docs show that XIconifyWIndow
returns a Status type, hinting at the Status enum we have, it is not
*treated* like a Status type. This function, so far in my experience, is
the only one to return non-zero when successful, and zero when a failure
occurrs (BadValue or BadWindow). Because of this, the type should
actually be a b32 to act as a boolean. Zero (false) for failure,
non-zero (true) for true.

vendor/x11/xlib/xlib_procs.odin

@@ -1302,7 +1302,7 @@ foreign xlib {
 		dipslay:   ^Display,
 		window:    Window,
 		screen_no: i32,
-		) -> Status ---
+		) -> b32 ---
 	WithdrawWindow :: proc(
 		dipslay:   ^Display,
 		window:    Window,