v1.0.1: Fix libmagic dependency issue

What's Changed

• Fixed libmagic ImportError by adding pylibmagic dependency (#6)
• Added [full] install option for easier setup
• Added Docker support with pre-installed libmagic
• Updated troubleshooting documentation

Bug Fixes

• Resolve "failed to find libmagic" error when importing langextract (#6)

Installation

# Standard install (now includes pylibmagic)
pip install langextract

# Full install (explicit all dependencies)
pip install langextract[full]

# Docker (libmagic pre-installed)
docker run --rm -e LANGEXTRACT_API_KEY="your-key" langextract python script.py

Full Changelog: v1.0.0...v1.0.1