recording-audio-video-stream windows patch

[ctnava]

trafficstars

Windows Compatibility Patch (custom fluent-ffmpeg-multistream implementation) because unix ports aren't readily accessible and creating a PR to the original dependency's repository is literally not an option.

Outside of whitespace and formatting, the only real edit to the server.js is

const { StreamInput } = require('./fluent-ffmpeg-multistream.js');