renewer certbot certs after launch/load env from file/listen on socket/disable http in AIO mode

Signed-off-by: Zoey <zoey@z0ey.de>

backend/templates/_listen.conf

@@ -1,3 +1,5 @@
+  listen unix:/run/nginx.sock;
+
   listen 80;
   listen [::]:80;
 

backend/templates/certbot-request.conf

@@ -1,6 +1,8 @@
 {% include "_header_comment.conf" %}
 
 server {
+  listen unix:/run/nginx.sock;
+
   listen 80;
   listen [::]:80;
 

backend/templates/default.conf

@@ -2,6 +2,8 @@
 # Default Site
 # ------------------------------------------------------------
 server {
+  listen unix:/run/nginx.sock default_server;
+
   listen 80 default_server;
   listen [::]:80 default_server;