love_0_10: add missing xorg.libX11 depend

SDL2 intentionally dropped xorg.libX11 propagated build depend.
This broke `love_0_10` as:

    In file included from modules/window/sdl/Window.cpp:43:
    /nix/store/nhq38i6s7zyhaa4l9csp5d1f1hyfzdqa-sdl2-compat-2.32.52-dev/include/SDL2/SDL_syswm.h:68:10: fatal error: X11/Xlib.h: No such file or directory
       68 | #include <X11/Xlib.h>

Let's add the dependency to `love_0_10` instead.

pkgs/development/interpreters/love/0.10.nix

@@ -20,6 +20,7 @@
   autoconf,
   automake,
   libtool,
+  xorg,
 }:
 
 stdenv.mkDerivation rec {
@@ -40,6 +41,7 @@ stdenv.mkDerivation rec {
   ];
   buildInputs = [
     SDL2
+    xorg.libX11 # SDl2 optional depend, for SDL_syswm.h
     libGLU
     libGL
     openal