offline tool: add enable/disable-auditor cmd

.

src/http_keys.ml

@@ -194,7 +194,11 @@ let mk_keys ~db_conn (module Sm : Secmod.S) ~last_issue_date =
   let* global_fees =
     Pg.get_global_fees db_conn ~start_date:Timestamp.epoch |> unwrap_err_caqti
   in
-  let auditors = (* TODO *) [] in
+  let* auditors =
+    (* TODO /auditors/$AUDITOR_PUB/$H_DENOM_PUB *)
+    (* does not contains auditor_keys with empty denomination_keys *)
+    Pg.get_auditor_keys db_conn
+  in
   let extensions = None in
   let extensions_sig = None in
   Ok