Debug zstd bundle extraction errors

Author: cklin

lib/tools-download.js

@@ -148,6 +148,10 @@ export async function downloadAndExtract(
     )}).`,
   );
 
+  // Add the following log to display the size of the downloaded bundle
+  const bundleSize = fs.statSync(archivedBundlePath).size;
+  logger.info(`Size of the downloaded CodeQL bundle: ${bundleSize} bytes`);
+
   let extractionDurationMs: number;
 
   try {