Fix plugin for PeerTube v8.0.2 validation

PeerTube v8.0.2 requires a "bugs" field in package.json and an
unregister() export in main.js. Add both to pass plugin validation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

peertube-plugin/peertube-plugin-recon-domains/main.js

@@ -25,4 +25,8 @@ async function register ({ videoCategoryManager }) {
   }
 }
 
-module.exports = { register }
+async function unregister () {
+  return
+}
+
+module.exports = { register, unregister }