net: Move HMP commands from monitor to net/

This moves these commands from MAINTAINERS sections "Human
Monitor (HMP)" and "QMP" to "Network device backends".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230124121946.1139465-16-armbru@redhat.com>
diff --git a/net/meson.build b/net/meson.build
index 6cd1e3d..87afca3 100644
--- a/net/meson.build
+++ b/net/meson.build
@@ -10,6 +10,7 @@
   'filter-rewriter.c',
   'filter.c',
   'hub.c',
+  'net-hmp-cmds.c',
   'net.c',
   'queue.c',
   'socket.c',