Function cleanup

cli/src/utils/github-downloader.ts:36–46

* Cleans up resources (file, response, request)

(
  file: fs.WriteStream | null,
  response: http.IncomingMessage | null,
  request: http.ClientRequest | null,
  tempPath: string
)

 * Cleans up resources (file, response, request)
 */
function cleanup(
  file: fs.WriteStream | null,
  response: http.IncomingMessage | null,
  request: http.ClientRequest | null,
  tempPath: string
): void {
  if (file) file.close();
  if (response) response.destroy();
  if (request) request.destroy();
  if (fs.existsSync(tempPath)) fs.unlinkSync(tempPath);
}

/**
 * Checks if cache is stale based on timestamp (1 day)