Refactor server files

servers/utils/nginx-https-server.nix

@@ -0,0 +1,25 @@
+{ lib, ... }:
+{
+  options.services.nginx.virtualHosts = lib.mkOption {
+    type = lib.types.attrsOf (
+      lib.types.submodule {
+        config = lib.mkDefault {
+          forceSSL = true;
+          kTLS = true;
+        };
+      }
+    );
+  };
+
+  config = {
+    networking.firewall.allowedTCPPorts = [ 443 ];
+
+    services.nginx = {
+      enable = true;
+      recommendedGzipSettings = true;
+      recommendedOptimisation = true;
+      recommendedTlsSettings = true;
+      recommendedProxySettings = true;
+    };
+  };
+}