feat(reverse_proxy): add Netcup DNS ACME challenge support and refactor Caddy setup

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

roles/reverse_proxy/tasks/80_configure.yml

@@ -0,0 +1,22 @@
+---
+- name: Ensure Caddy configuration directory exists
+  ansible.builtin.file:
+    path: /etc/caddy
+    state: directory
+    mode: "0755"
+  become: true
+
+- name: Deploy Caddy configuration file
+  ansible.builtin.template:
+    src: Caddyfile.j2
+    dest: "{{ caddy_config_path }}"
+    mode: "0644"
+    backup: true
+  become: true
+  notify: Restart caddy service
+
+- name: Format Caddy configuration file
+  ansible.builtin.command:
+    cmd: "caddy fmt --overwrite {{ caddy_config_path }}"
+  become: true
+  notify: Restart caddy service