feat(ops/modules/monorepo-gerrit): enable webhooks plugin

Fixes: https://git.snix.dev/snix/snix/issues/74
Change-Id: If4ca98cc1886f5e0a26dcc1ebeef4758054d3811
Reviewed-on: https://cl.snix.dev/c/snix/+/30529
Tested-by: besadii
Autosubmit: Florian Klink <flokli@flokli.de>
Reviewed-by: Ryan Lahfa <ryan@lahfa.xyz>

ops/modules/monorepo-gerrit.nix

@@ -29,6 +29,7 @@ in
       "download-commands"
       "hooks"
       "replication"
+      "webhooks"
     ];
 
     plugins = with gerritPlugins; [
@@ -132,6 +133,14 @@ in
         disabledBranch = "refs/meta/config";
       };
 
+      plugin.webhooks = {
+        connectionTimeout = 3000;
+        socketTimeout = 2500;
+        maxTries = 5;
+        retryInterval = 5000;
+        threadPoolSize = 3;
+      };
+
       # Allow users to add additional email addresses to their accounts.
       oauth.allowRegisterNewEmail = true;