refactor: 将VariableMqttAlias改为MqttAlias,将VariableMqttAliasItemViewModel改为MqttAliasItem

DMS.Application/Services/AppDataStorageService.cs

@@ -41,7 +41,7 @@ public class AppDataStorageService : IAppDataStorageService
     /// <summary>
     /// 安全字典，用于存储所有MQTT变量别名的数据
     /// </summary>
-    public ConcurrentDictionary<int, VariableMqttAlias> VariableMqttAliases { get; } = new();
+    public ConcurrentDictionary<int, MqttAlias> VariableMqttAliases { get; } = new();