Initial listmonk role: eom.dev newsletter on Kubernetes

listmonk v6.2.0 with PostgreSQL 17, Dex login for listed admins,
delivery through postfix.eom.dev, Catppuccin public pages, Altcha
captcha and a double opt-in "eom.dev" list. Database-held settings
are converged by an idempotent SQL script, tested against v6.2.0.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

meta/main.yml

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: MIT-0
+---
+galaxy_info:
+  role_name: listmonk
+  author: Eric Meehan
+  description: Deploy the eom.dev newsletter (listmonk) to Kubernetes with Dex login and postfix.eom.dev delivery.
+  license: MIT-0
+  min_ansible_version: "2.16"
+  galaxy_tags:
+    - kubernetes
+    - listmonk
+    - newsletter
+    - email
+dependencies: []