Update list of OS and ARCH to target

[jpvlsmv]

The current terraform-provider-scaffolding repository offers builds for Freebsd, Windows, Linux, and Darwin.

In my particular case, I'm running on Windows, and currently get an error message of

Provider registry.terraform.io/harvester/harvester v0.6.1 does not have a package available for your current platform, windows_amd64.

[futuretea]

It does not compile successfully on freebsd and windows

[Jihatech]

Hi, when can we use this provider on windows?

[jpvlsmv]

As long as github.com/c9s/goprocinfo is a dependency (it is Linux-only) this module can not run on any other platforms :(

It's not a direct dependency.
terraform-provider-harvester depends on github.com/harvester/harvester
github.com/harvester/harvester depends on kubevirt.io/kubevirt
kubevirt.io/kubevirt depends on c9s/goprocinfo in its pkg/monitoring/domainstats/downwardmetrics/hostmetrics.go

It "should" be possible to stub out the dependency (assuming that I don't need to monitor the host metrics when using the provider) but I'm not enough of a golang programmer to fully understand how it would be done.