Unify nginx configuration

This creates a simple base configuration skeleton, that other configuration can be easily loaded into.

ansible/roles/qbittorrent/handlers/main.yml

@@ -1,7 +1,7 @@
-- name: restart nginx
+- name: reload nginx
   service:
     name: nginx
-    state: restarted
+    state: reloaded
   become: true
 
 - name: restart qbittorrent