modules/opts: move options to top of init.lua

Using mkOrder to ensure the options can be accessible to everything
throughout the config. Setting right below global table available, so
variables can reference stuff inside global table.

modules/opts.nix

@@ -84,6 +84,6 @@ in
           ) optionsAttrs
         );
       in
-      mkIf (content != "") content;
+      mkIf (content != "") (mkOrder 600 content); # Move options to top of file below global table
   };
 }