feat: add create message c interface.

Signed-off-by: Gordon <46924906+FGadvancer@users.noreply.github.com>

c_wrapper/test.c

@@ -56,6 +56,9 @@ int main(int argc, char **argv)
     printf("init_result: %u\n", init_result);
 
     login(success, on_connect_failed, operationID, uid, token);
+//    char text[] = "哈哈";
+    GoString message = create_text_message(operationID,"哈哈");
+    printf("return :%s",message);
 
     sleep(1000000);
     return 0;