Airplay2 for windows.

Migrate AirplayServer and dnssd to Windows Platform.

• Open airplay2-win.sln in Visual Studio 2019.
• Make airplay-dll-demo as Start Project.
• Ctrl + B, Build airplay-dll-demo.
• The generated lib and dll files will be placed in AirPlayServer folder.

• shairplay
• dnssd
• AirplayServer
• xindawn-windows-airplay-mirroring-sdk

• 可以被iOS设备发现，但无法连接。

  确保iOS和Windows处于同一个Wi-Fi，同一个网段下。如果Windows是在虚拟机中运行，确保使用的是桥接网络，而不是共享网络。