[v1.1 RelAPI Onboarding] Add release API metadata file (#30857)

Author: mdeggies

.release/release-metadata.hcl

@@ -0,0 +1,5 @@
+url_docker_registry_dockerhub = "https://hub.docker.com/r/hashicorp/terraform"
+url_docker_registry_ecr = "https://gallery.ecr.aws/hashicorp/terraform"
+url_license = "https://github.com/hashicorp/terraform/blob/main/LICENSE"
+url_project_website = "https://www.terraform.io"
+url_source_repository = "https://github.com/hashicorp/terraform"