Move ansible-sshjail and zsh-histdb into my config instead of living as separate flakes.

nix/configuration/roles/ansible/default.nix

@@ -25,6 +25,9 @@
         ];
 
         nixpkgs.overlays = [
+          (final: prev: {
+            ansible-sshjail = (final.callPackage ./package/ansible-sshjail/package.nix { });
+          })
           (final: prev: {
             ansible = pkgs.symlinkJoin {
               name = "ansible";