Integrate voso, join_call route for channels.

src/routes/channels/mod.rs

@@ -5,6 +5,7 @@ mod fetch_channel;
 mod group_add_member;
 mod group_create;
 mod group_remove_member;
+mod join_call;
 mod message_delete;
 mod message_edit;
 mod message_fetch;
@@ -24,6 +25,7 @@ pub fn routes() -> Vec<Route> {
         message_delete::req,
         group_create::req,
         group_add_member::req,
-        group_remove_member::req
+        group_remove_member::req,
+        join_call::req,
     ]
 }