feat(edge_vps): add WireGuard setup task and template

roles/edge_vps/tasks/20_wireguard.yaml

@@ -0,0 +1,19 @@
+---
+- name: Install WireGuard
+  ansible.builtin.apt:
+    name: wireguard
+    state: present
+    update_cache: true
+
+- name: Deploy WireGuard config
+  ansible.builtin.template:
+    src: wireguard/wg0.conf.j2
+    dest: "{{ edge_vps_wireguard_config_dir }}/{{ edge_vps_wireguard_interface }}.conf"
+    mode: "0600"
+  notify: restart wireguard
+
+- name: Enable WireGuard
+  ansible.builtin.systemd:
+    name: "wg-quick@{{ edge_vps_wireguard_interface }}"
+    enabled: true
+    state: started