(TFECO-8260) Add Heimdall metadata (#450)

* (TFECO-8260) Add Heimdall metadata

* Update META.d/_summary.yml

* Update META.d/_summary.yml

---------

Author: jpogran

META.d/_summary.yml

@@ -0,0 +1,11 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
+schema: 1.1
+partition: tf-ecosystem
+category: github-action
+
+summary:
+  owner: team-tf-devex
+  description: JavaScript action that sets up Terraform CLI in your GitHub Actions workflow
+  visibility: external

META.d/data.yml

@@ -0,0 +1,6 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
+data_summary:
+  gdpr:
+    exempt: true