move postgres to bakk

modules/fh/bakk.nix

@@ -0,0 +1,11 @@
+{ config, pkgs, lib, ... }: {
+  services.postgresql = {
+    enable = true;
+    extensions = with pkgs.postgresql14Packages; [ pg_libversion ];
+    authentication = pkgs.lib.mkOverride 10 ''
+      #TYPE  DATABASE   USER    ADDRESS        METHOD
+      local all         all                    trust
+      host  all         all     127.0.0.1/32   trust
+    '';
+  };
+}