ADD syncthing to web server

hosts/web/configuration.nix

@@ -10,6 +10,7 @@
     ../modules/users.nix
 #    ../docker/appsmith.nix
     ../docker/kuma.nix
+    ../modules/syncthing.nix
   ];
 
   system.stateVersion = "21.11";

hosts/web/webserver.nix

@@ -35,6 +35,11 @@ in
     atlanticaweb.fr:2021 {
       metrics
     }
+    https://sync.atlanticaweb.fr {
+	reverse_proxy http://localhost:8384 {
+            header_up Host {upstream_hostport}
+}
+    }
     www.atlanticaweb.fr {
       redir https://atlanticaweb.fr{uri}
     }