✨ Add Media Collection to Scraping Pipeline

Summary

This PR introduces the collect_media function, which enhances scraping capabilities by automatically detecting and downloading various types of media assets from a web page using a Selenium-controlled browser session.

🔧 Features

Supported Media Types:

• Images (<img>)
• Videos (<video>)
• Audio files (<audio>)
• PDFs (<a href="*.pdf">)
• Documents (.doc, .docx, .txt, .rtf)
• Presentations (.ppt, .pptx)
• Spreadsheets (.xls, .xlsx, .csv)

Functionality:

• Uses CSS selectors to find elements containing media links.
• Downloads each valid media file (HTTP/HTTPS only).
• Saves all assets to a structured media/ directory, grouped by media type.
• Writes a download_summary.txt with the original URLs and their local file paths.

Error Handling:

• Skips failed downloads and logs the error.
• Generates fallback filenames when none are detected in the URL.