feat: Introduce an Ansible common role for base system configuration, including packages, users, and Netplan networking, alongside Semaphore playbooks for system bootstrapping and Proxmox management.

ansible/roles/common/tasks/users.yml

@@ -0,0 +1,18 @@
+---
+- name: Ensure users exist
+  user:
+    name: "{{ item.name }}"
+    shell: /bin/bash
+    groups: sudo
+    append: yes
+    state: present
+  loop: "{{ common_ssh_users }}"
+  when: item.create_user | default(false)
+
+- name: Add SSH keys
+  authorized_key:
+    user: "{{ item.0.name }}"
+    key: "{{ item.1 }}"
+  loop: "{{ common_ssh_users | subelements('keys', skip_missing=True) }}"
+  loop_control:
+    label: "{{ item.0.name }}"