mv obsidian to module

modules/nix/groups/desktop.nix

@@ -27,6 +27,7 @@ in
       wireguard.enable = true;
       gui-utilities.enable = true;
       mouse.enable = true;
+      obsidian.enable = true;
       thunderbird.enable = true;
     };
   };

modules/nix/groups/laptop.nix

@@ -27,6 +27,7 @@ in
       wireguard.enable = true;
       gui-utilities.enable = true;
       mouse.enable = true;
+      obsidian.enable = true;
       thunderbird.enable = true;
     };
     services.logind.lidSwitch = "ignore";