cmake/build: fix build break on cmake

[anchao]

Summary

cmake/build: fix build break on cmake
tools/ci: add rpproxy/rpserver into cmake build

Impact

Depends on: apache/nuttx-apps#1848

Testing

ci check

[anchao]

ci fail depends on apache/nuttx-apps#1848 :

/tools/ccache/bin/cc -D__NuttX__ -Dmain=iperf_main -I/github/workspace/sources/nuttx/openamp/open-amp/lib/include -I/github/workspace/sources/apps/include -I/github/workspace/sources/nuttx/build/apps/include -isystem /github/workspace/sources/nuttx/include -isystem /github/workspace/sources/nuttx/build/include -isystem /github/workspace/sources/nuttx/build/include_arch -Wstrict-prototypes -fno-common -g -m32 -fomit-frame-pointer -fdiagnostics-color=always -Wall -Wstrict-prototypes -Wshadow -Wundef -DNDEBUG -fvisibility=hidden -U_AIX -U_WIN32 -U__APPLE__ -U__FreeBSD__ -U__NetBSD__ -U__linux__ -U__sun__ -U__unix__ -U__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ -MD -MT apps/netutils/iperf/CMakeFiles/apps_iperf.dir/iperf_main.c.o -MF apps/netutils/iperf/CMakeFiles/apps_iperf.dir/iperf_main.c.o.d -o apps/netutils/iperf/CMakeFiles/apps_iperf.dir/iperf_main.c.o -c /github/workspace/sources/apps/netutils/iperf/iperf_main.c
/github/workspace/sources/apps/netutils/iperf/iperf_main.c:32:10: fatal error: argtable3.h: No such file or directory
   32 | #include "argtable3.h"
      |          ^~~~~~~~~~~~~