fix: mqtt和websocket库的适配状态是未知, 修正之

components/iconv/SConscript

@@ -1,10 +0,0 @@
-from building import *
-
-cwd = GetCurrentDir()
-src = Glob('*.c')
-
-CPPPATH = [cwd]
-
-group = DefineGroup('iconv', src, depend = [], CPPPATH = CPPPATH)
-
-Return('group')

components/network/libemqtt/luat_lib_mqtt.c

@@ -3,8 +3,8 @@
 @summary mqtt客户端
 @version 1.0
 @date    2022.08.25
-@demo socket
-@tag LUAT_USE_MQTT
+@demo mqtt
+@tag LUAT_USE_NETWORK
 */
 
 #include "luat_base.h"

components/network/websocket/luat_lib_websocket.c

@@ -4,6 +4,7 @@
 @version 1.0
 @date    2022.11.28
 @demo    websocket
+@tag LUAT_USE_NETWORK
 @usage
 local wsc = nil
 if websocket then