Add audio generation, auto mode, MCP server, and comprehensive documentation

Features:
- Audio generation: TTS via Bark/Edge-TTS, music via MusicGen
- Audio sync: stretch, trim, pad, loop modes
- Lip sync: Wav2Lip and SadTalker integration
- Auto mode: automatic model selection with NSFW detection
- MCP server: AI agent integration via Model Context Protocol
- Model management: external config, search, validation
- T2I/I2I support: static image and image-to-image generation
- Time estimation: detailed timing breakdown for each step

Documentation:
- README.md: comprehensive installation and usage guide
- EXAMPLES.md: 100+ command-line examples
- SKILL.md: AI agent integration guide
- LICENSE.md: GPLv3 license

Copyleft © 2026 Stefy <stefy@nexlab.net>