feat(download): add yt-dlp integration for video/audio/subtitle downloads

- Add new download.py module with yt-dlp wrapper for YouTube, TikTok, Twitter, and 1000+ sites
- Implement URL validation and metadata extraction with error handling for private, geo-restricted, and age-restricted content
- Add interactive CLI for format selection, quality preferences, and output customization
- Support video, audio, subtitle, and thumbnail downloads with progress tracking
- Include platform-specific yt-dlp installation instructions (macOS, Windows, Linux)
- Add yt-dlp as optional dependency in pyproject.toml and requirements.txt
- Integrate download feature into main peg_this CLI menu
- Enables users to download and process content from multiple platforms before applying other features

Author: hariharen9

pyproject.toml

@@ -48,6 +48,7 @@ dependencies = [
 # Heavy AI features (~1.5GB each, includes PyTorch)
 demucs = ["demucs>=4.0.0"]
 upscale = ["realesrgan>=0.3.0", "basicsr>=1.4.2"]
+download = ["yt-dlp>=2024.0.0"]
 all-ai = ["demucs>=4.0.0", "realesrgan>=0.3.0", "basicsr>=1.4.2"]
 
 dev = [

requirements.txt

@@ -14,3 +14,4 @@ deep-translator
 pathvalidate
 pydub
 requests
+yt-dlp