🚚 (home/wayland) move eww's config in its own folder

(this way `default.nix` won't be copied inside the configDir)

home/wayland/eww/default.nix

@@ -2,6 +2,6 @@
   programs.eww = {
     enable = true;
     package = pkgs.eww-wayland;
-    configDir = ./.;
+    configDir = ./config;
   };
 }