chore: Replace Makefile with atmos.yaml (#202)

Author: osterman

Makefile

@@ -25,7 +25,7 @@ badges:
     url: https://github.com/cloudposse/terraform-aws-elasticsearch/commits
   - name: Slack Community
     image: https://slack.cloudposse.com/for-the-badge.svg
-    url: https://slack.cloudposse.com
+    url: https://cloudposse.com/slack
 description: |-
   Terraform module to provision an [`Elasticsearch`](https://aws.amazon.com/elasticsearch-service/) cluster with built-in integrations with [Kibana](https://aws.amazon.com/elasticsearch-service/kibana/) and [Logstash](https://aws.amazon.com/elasticsearch-service/logstash/).
 
@@ -80,10 +80,7 @@ usage: |2-
   }
   ```
 
-include:
-  - "docs/targets.md"
-  - "docs/terraform.md"
-
+include: []
 references:
   - name: "What is Amazon Elasticsearch Service"
     description: "Complete description of Amazon Elasticsearch Service"

README.yaml

@@ -0,0 +1,12 @@
+# Atmos Configuration — powered by https://atmos.tools
+#
+# This configuration enables centralized, DRY, and consistent project scaffolding using Atmos.
+#
+# Included features:
+# - Organizational custom commands: https://atmos.tools/core-concepts/custom-commands
+# - Automated README generation: https://atmos.tools/cli/commands/docs/generate
+#
+
+# Import shared configuration used by all modules
+import:
+  - https://raw.githubusercontent.com/cloudposse/.github/refs/heads/main/.github/atmos/terraform-module.yaml