增加缺失的配置文件

src/JT808.Gateway.TestHosting/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Warning"
+    }
+  }
+}