s390x support

[Hendrik-H]

Is your feature request related to a problem? Please describe. It would be nice if there support for s390x.

Describe the solution you'd like Easy instructions on how to get gWhisper build for 390. Ideally also a binnary that could be used straight away for example using a multi arch docker image.

Describe alternatives you've considered creating my own gRPC client

Describe why you think this feature is useful for gWhisper users gWhisper is part of the 390 org and it would be nice if we would support 390 more widely