Adding ext device support

src_data/locales/cn.json

@@ -104,6 +104,7 @@
         "mMqttConnected": "MQTT服务器连接状态",
         "mEmergencyState": "应急模式",
         "mExtPumpState": "外置循环泵",
+        "mExtDevState": "外置设备",
         "mCascadeControlInput": "Cascade 控制 (input)",
         "mCascadeControlOutput": "Cascade 控制 (output)",
 
@@ -289,6 +290,7 @@
         "ot": "OpenTherm协议设置",
         "mqtt": "MQTT 服务器设置",
         "extPump": "外置循环泵设置",
+        "extDev": "外置设备设置",
         "cascadeControl": "Cascade 级联控制设置"
       },
 
@@ -459,6 +461,13 @@
         "antiStuckTime": "防卡死运行时长<small>(分钟)</small>"
       },
 
+      "extDev": {
+        "use": "使用外置设备",
+        "gpio": "GPIO 继电器",
+        "state": "状态",
+        "caption": "说明"
+      },
+
       "cascadeControl": {
         "input": {
           "desc": "仅当另一台锅炉发生故障时启用本锅炉加热。另一台锅炉的控制器需在故障发生时切换GPIO输入状态以触发本功能。",