* repeater: new CLI command 'neighbors'

variants/xiao_c3/platformio.ini

@@ -33,6 +33,7 @@ build_flags =
   -D ADVERT_LAT=0.0
   -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
 lib_deps =