This is nothing new
Google Cloud VMware Engine has existed for years. It was first announced in July 2019: https://cloud.google.com/blog/topics/partners/vmware-cloud-foundation-comes-to-google-cloud
What's new here is a GitHub repository to use Terraform to deploy GCVE.
This is a service similar to what other hyperscalers offer: VMware Cloud on AWS, Azure VMware Solutions, Oracle Cloud VMware Solution, Alibaba Cloud VMware Service and IBM Cloud for VMware Solutions.
(Disclaimer: I work for VMware - not on this though)