Add missing source file to CMakeList (#291)

Signed-off-by: acuadros95 <acuadros1995@gmail.com>

Author: Acuadros95

rmw_microxrcedds_c/CMakeLists.txt

@@ -190,6 +190,7 @@ set(SRCS
   src/rmw_event.c
   src/rmw_features.c
   src/rmw_get_gid_for_publisher.c
+  src/rmw_get_gid_for_client.c
   src/rmw_get_implementation_identifier.c
   src/rmw_get_serialization_format.c
   src/rmw_get_topic_endpoint_info.c