feat: add nixedit command

open nixconf folder using the default editor

home/default.nix

@@ -112,6 +112,7 @@
         scripts = with import ./scripts { inherit pkgs; }; [
           screenshot
           set-background
+          nixedit
         ];
       in
       scripts ++ pk;

home/scripts/default.nix

@@ -26,4 +26,6 @@
       }
     )
   );
+
+  nixedit = pkgs.writers.writeFishBin "nixedit" "env --chdir ~/.nixconf $EDITOR .";
 }