一些基础资料的导入功能添加

wtt

2025-01-07 4fbd5ca573eb91bbccf35680e18b81bb5b0fdcce

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<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="M2Mqtt" version="4.3.0.0" targetFramework="net45" />
</packages>