Add the host argument to the XVIZServer constructor in python

[Sid1057]

It is important to use different host servers when you run your servers on multiple machines and want to visualize data from multiple hosts like in this tutorial https://avs.auto/#/streetscape.gl/advanced-topics/display-multiple-logs

Surprisingly enough, this possibility was not released in the current wrapper in python.

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[Sid1057]

Anybody?