feat: nginx jinja templates

templates/nginx_server_block.conf.j2

@@ -0,0 +1,15 @@
+server{
+
+    # {{ comment }}
+    
+    listen 443 ssl;
+    listen [::]:443 ssl;
+
+    {% if servernames %}
+    server_name {% for s in servernames %} {{ s }} {% endfor %};
+    {% endif %}
+
+    include locations/acme-challenge.conf;
+    
+    proxy_pass http://{{ targetip }}:{{ targetport }};
+}