test(chat): include complete ETCP types for diagnostic fixture

tests/test_chat_member.c

@@ -2,6 +2,8 @@
 #define _GNU_SOURCE
 #include "../src/chat/chat_member.c"
 #include "../src/routing_layer/topo_node_sqlite.h"
+#include "../src/transport_layer/etcp.h"
+#include "../src/transport_layer/etcp_connections.h"
 #include "../lib/strbuf.h"
 #include <assert.h>