Add Linux development station role with systemd services for code-server and OpenCode

- Implemented handlers for restarting code-server and OpenCode services.
- Created main tasks for setting up a Linux development station, including user management, package installation, and configuration.
- Added validation for OpenCode server credentials and code-server password.
- Introduced tool package management for npm, uv, and go installers.
- Developed templates for systemd service units for code-server and OpenCode.
- Included scripts for starting code-server and OpenCode with SSH agent support.
- Updated inventory and Terraform configuration to include new development host.

ansible/roles/linux_dev_station/handlers/main.yml

@@ -0,0 +1,24 @@
+---
+- name: Reload and restart code-server
+  become: true
+  ansible.builtin.systemd:
+    name: code-server
+    state: restarted
+    daemon_reload: true
+  when:
+    - linux_dev_station_manage_systemd | bool
+    - linux_dev_station_code_server_systemd_enabled | bool
+  listen: Restart code-server
+
+- name: Reload and restart opencode
+  become: true
+  ansible.builtin.systemd:
+    name: opencode
+    state: restarted
+    daemon_reload: true
+  when:
+    - linux_dev_station_manage_systemd | bool
+    - linux_dev_station_opencode_systemd_enabled | bool
+  listen: Restart opencode
+
+