perf: disable perMessageDeflate

[feross]

From the ws docs:

"ws supports the permessage-deflate extension extension which enables
the client and server to negotiate a compression algorithm and its
parameters, and then selectively apply it to the data payloads of each
WebSocket message.

The extension is enabled by default but adds a significant overhead in
terms of performance and memory comsumption. We suggest to use
WebSocket compression only if it is really needed.

To disable the extension you can set the perMessageDeflate option to
false"

[DiegoRBaquero]

Be it in ws or uws, it provides a performance/memory boost.

[lpinca]

@feross @DiegoRBaquero you might also want to disable clientTracking as it seems that bittorrent-tracker uses its own logic to track clients.

The clientTracking option defaults to true and when enabled clients are stored in an array in ws@1 and in a set in ws@2.

As you can imagine the complexity to remove a client when it disconnects is O(n) in ws@1.