feat: update systemDirs.data to include gsettings schemas for improved desktop integration

Author: TophC7

modules/home/common/xdg.nix

@@ -143,7 +143,11 @@ in
     mimeApps.enable = true;
     mimeApps.defaultApplications = associations;
     mimeApps.associations.added = associations;
-    systemDirs.data = [ "${config.home.homeDirectory}/.nix-profile/share/applications" ];
+    systemDirs.data = [
+      "${config.home.homeDirectory}/.nix-profile/share/applications"
+      "${pkgs.gsettings-desktop-schemas}/share/gsettings-schemas/${pkgs.gsettings-desktop-schemas.name}"
+      "${pkgs.gtk3}/share/gsettings-schemas/${pkgs.gtk3.name}"
+    ];
   };
 
   home.packages = builtins.attrValues {