network: Move networkd-manager.h include to implementation file

src/network/networkd-manager-varlink.c

@@ -8,7 +8,9 @@
 #include "fd-util.h"
 #include "json-util.h"
 #include "lldp-rx-internal.h"
+#include "network-util.h"
 #include "networkd-dhcp-server.h"
+#include "networkd-manager.h"
 #include "networkd-manager-varlink.h"
 #include "stat-util.h"
 #include "varlink-io.systemd.Network.h"

src/network/networkd-manager-varlink.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "networkd-manager.h"
+typedef struct Manager Manager;
 
 int manager_connect_varlink(Manager *m);
 void manager_varlink_done(Manager *m);