Install Pi-hole with some existing problems

There is an error telling that dnsmasq doesn't start, this might have
to do with the user having to be root.
The DNS service also isn't exposed yet as it needs some ufw forwarding
(there's a TODO in the code mentioning this).

roles/pi-hole/handlers/main.yml

@@ -0,0 +1,6 @@
+---
+- name: Restart Nginx
+  become: true
+  ansible.builtin.systemd:
+    name: nginx.service
+    state: restarted