split federation request from sending service

Signed-off-by: Jason Volk <jason@zemos.net>

src/service/mod.rs

@@ -10,6 +10,7 @@ pub mod admin;
 pub mod appservice;
 pub mod client;
 pub mod emergency;
+pub mod federation;
 pub mod globals;
 pub mod key_backups;
 pub mod media;