Log supported plugins

Summary: We frequently get support requests asking why a certain plugin is not enabled for an app. This diff makes it easy to reason which plugins are enabled on the device

Differential Revision: D37381316

fbshipit-source-id: 148d6d8b6f51cb161eb625cabe0fa629b8a00cf5

desktop/flipper-frontend-core/src/AbstractClient.tsx

@@ -126,6 +126,7 @@ export default abstract class AbstractClient extends EventEmitter {
       'Fetch plugin timeout for ' + this.id,
     );
     this.plugins = new Set(plugins);
+    console.info('AbstractClient.loadPlugins', this.query, plugins);
     return plugins;
   }