Moonlight for Xbox pre-release 1.19.0-pre1 (please test!)

Calling all Dev Mode testers, here is a preview of upcoming Xbox features and fixes.

Download at: [1.19.0-pre1](https://github.com/andygrundman/moonlight-xbox/releases/tag/1.19.0-pre1)

* PyroWave support: integrate optimized D3D12 decoder from u/dimizago * Xbox Series S/X only * Up to 4K120 4:4:4 HDR at 800Mbps, GPU decode time <= 1.8ms * Compatible with Vibeshine and probably other servers. * Wired only * Default bitrates (4K, 1440p, 1080p): * 4:4:4: 800Mbps/600/500 * 4:2:0: 700Mbps/500/400 * New stat line shows packets/sec and lost packets within the last minute. * Decode time for PyroWave is split between CPU and GPU. Note that reassembly/CPU and GPU are concurrent and shouldn't be added together. * If you have problems, make sure packet size is set to 1392. Set host NIC to 1Gbps if you have packet loss and have a 2.5Gb or higher network. ***You should not experience any packet loss at 800Mbps on a typical network.*** * Fix hang/crash when removing a host. #301 * Replace mDNS discovery code with the Microsoft API used by Windows. Hosts should now be discovered and updated much more reliably. #304 * Fix a crash when reconnecting. (TheOriginalAppStar) #300 * Improve audio stability at 5.1/7.1. #302 * Fix crash on Xbox One when streaming at 4K. #296 * Improve render time of stats text by 6x, mostly benefiting Xbox One. * Add support for Tracy profiling with Dev Mode (see docs).