Httpclient stale dns

[CarbonNeuron]

The current way that httpclient is being used by default causes DNS entries to become stale. More information on this, and a fix can be found here on Microsoft docs.
It looks like it can be a simple fix by instead of passing a httpclienthandler in

WLED.NET/src/Kevsoft.WLED/WLedClient.cs

Line 18 in 9381c27

public WLedClient(string baseUri) : this(new HttpClientHandler(), baseUri)

Passing a SocketsHttpHandler with the PooledConnectionLifetime property set to something reasonable.

If I get around to it later, and this hasn't been done yet, I'll probably submit a pull request.

[kevbite]

Hey @CarbonNeuron thanks for highlighting this, happy to accept the PR.