Add macOS development station playbook and role

- Created a new Ansible playbook for configuring macOS development stations.
- Added role `macos_dev_station` with default variables, handlers, and tasks.
- Implemented tasks for installing Homebrew packages, managing user configurations, and setting up launch agents for code-server and opencode.
- Included templates for launchd plist files and startup scripts for code-server and opencode.
- Added validation for required environment variables and configurations.
- Updated inventory to include macOS hosts and added a setup script for initial prerequisites.
- Modified Terraform configuration to include DNS records for new services.

ansible/playbook_macos_dev_station.yml

@@ -0,0 +1,14 @@
+---
+- name: Configure macOS dev station
+  hosts: darwin_dev
+  gather_facts: true
+
+  pre_tasks:
+    - name: Ensure target is macOS
+      ansible.builtin.assert:
+        that:
+          - ansible_system == "Darwin"
+        fail_msg: "This playbook supports macOS hosts only"
+
+  roles:
+    - macos_dev_station