games/steam-sandbox: Include hidraw devices

This is required for Nintendo Switch controllers (hid_nintendo does not
work with third-party ones).

users/simon/modules/games.nix

@@ -68,6 +68,11 @@ let
         --ro-bind /sys /sys # required for discovery
       )
 
+    for hidraw in /dev/hidraw*; do
+        bubblewrap_args+=(--dev-bind $hidraw $hidraw)
+    done
+
+
     unset SDL_VIDEODRIVER QT_QPA_PLATFORM # games generally don’t support wayland
     export PATH="${pkgs.unstable.mangohud}/bin:$PATH"