net: add peer network to CNodeStats

src/net.h

@@ -706,6 +706,8 @@ public:
     CAddress addr;
     // Bind address of our side of the connection
     CAddress addrBind;
+    // Name of the network the peer connected through
+    std::string m_network;
     uint32_t m_mapped_as;
     std::string m_conn_type_string;
 };