Publish the provider so it can be consumed from terraform-vault: on a tag,
package the linux_amd64 build into a versioned zip and PUT it to the artifactapi
terraform registry, mirroring terraform-provider-artifactapi's release flow.
- Add .woodpecker/release.yml (event: tag) running make package + curl upload to
remotes/terraform-unkin/files/unkin/litellmvaultsecret/
