add cli command for global foreign network info

easytier/src/peers/route_trait.rs

@@ -4,7 +4,9 @@ use dashmap::DashMap;
 
 use crate::{
     common::PeerId,
-    proto::peer_rpc::{ForeignNetworkRouteInfoEntry, ForeignNetworkRouteInfoKey},
+    proto::peer_rpc::{
+        ForeignNetworkRouteInfoEntry, ForeignNetworkRouteInfoKey, RouteForeignNetworkInfos,
+    },
 };
 
 #[derive(Clone, Debug)]
@@ -79,6 +81,10 @@ pub trait Route {
         None
     }
 
+    async fn list_foreign_network_info(&self) -> RouteForeignNetworkInfos {
+        Default::default()
+    }
+
     async fn set_route_cost_fn(&self, _cost_fn: RouteCostCalculator) {}
 
     async fn dump(&self) -> String {