Scrape Creators API / Trending Reels

Fetches trending reels from Instagram's public instagram.com/reels page. Instagram only gives a small batch at a time and the results can overlap, so call this endpoint over and over when you want more. Each call should return new-ish results, but expect some duplicates because that is how Instagram's reels page behaves too. Returns reels, an array of reel objects with shortcode, URL, caption, media URLs, engagement counts when Instagram exposes them, and user info.