feat(*): initialize new Snix infrastructure

Co-Authored-By: edef <edef@edef.eu>
Co-Authored-by: Ryan Lahfa <raito@lix.systems>
Change-Id: Ica1cda177a236814de900f50a8a61d288f58f519

ops/modules/www/cl.snix.dev.nix

@@ -0,0 +1,33 @@
+{ config, ... }:
+
+{
+  imports = [
+    ./base.nix
+  ];
+
+  config = {
+    services.nginx.virtualHosts."cl-shortlink" = {
+      serverName = "cl";
+      extraConfig = "return 302 https://cl.snix.dev$request_uri;";
+    };
+
+    services.nginx.virtualHosts.gerrit = {
+      serverName = "cl.snix.dev";
+      enableACME = true;
+      forceSSL = true;
+
+      extraConfig = ''
+        location / {
+          proxy_pass http://localhost:4778;
+          proxy_set_header  X-Forwarded-For $remote_addr;
+          # The :443 suffix is a workaround for https://b.snix.dev/issues/88.
+          proxy_set_header  Host $host:443;
+        }
+
+        location = /robots.txt {
+          return 200 'User-agent: *\nAllow: /';
+        }
+      '';
+    };
+  };
+}