apps/system/composite: change cmake build name to conn and disconn

The executable file compiled by cmake has the same filename as
that compiled by make.

Signed-off-by: yangsong8 <[email protected]>

Author: yangsong8-a1

system/composite/CMakeLists.txt

@@ -21,5 +21,6 @@
 # ##############################################################################
 
 if(CONFIG_SYSTEM_COMPOSITE)
-  nuttx_add_application(NAME composite SRCS composite_main.c)
+  nuttx_add_application(NAME conn SRCS composite_main.c)
+  nuttx_add_application(NAME disconn)
 endif()