update file cmakelists

CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.10)
+project(common_msgs)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+if (NOT TARGET std_msgs)
+    add_subdirectory(std_msgs)
+endif()
+if (NOT TARGET sensor_msgs)
+    add_subdirectory(sensor_msgs)
+endif()
+if (NOT TARGET geometry_msgs)
+    add_subdirectory(geometry_msgs)
+endif()
+if (NOT TARGET nav_msgs)
+    add_subdirectory(nav_msgs)
+endif()