sidecar does not build out of tree

[aep]

the sidecar example https://github.com/kubevirt/kubevirt/blob/main/cmd/sidecars/smbios/smbios.go
does not build when pulled out of tree.

go mod tidy
go: finding module for package kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap/api
go: found kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap/api in kubevirt.io/kubevirt v1.2.0
go: github.com/openshift/api@v0.0.0: reading github.com/openshift/api/go.mod at revision v0.0.0: unknown revision v0.0.0

there is a nice https://github.com/kubevirt/api package that would work just fine,
but its missing the virt-launcher/virtwrap/api

so currently to implement a sidecar, you need to fork kubevirt itself

[alicefr]

/cc @victortoso

[victortoso]

The current usage of kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap/api is only related to schema.go which means it can be replaced by libvirtxml, which is actually preferred. I'm working on doing that from virt-launcher side already too.

somewhat related: #10844
/assign