added startup config

configuration.nix

@@ -114,6 +114,10 @@
 	          "float, class:^(Godot)$, title:^(?!(.*Godot)).*$"
 	          "float, initialTitle:^(Godot)$, class:^(?!(Godot)).*$"
 	        ];
+          exec-once = [
+            "swaybg -i ~/.wallpaper -m fill"
+            "nextcloud --background"
+          ];
         };
       };
 	programs.neovim = {
@@ -164,6 +168,7 @@
       signal-desktop
       cargo
       docker
+      swaybg
     ];
   };