Implement complete Eugen Twitch chatbot

This commit implements the full Eugen bot based on specifications in CLAUDE.md and eugen_claude.md.

Features implemented:
- Smart name recognition (@Eugen, Eugen:, etc.)
- Persistent conversation memory per user (max 25 messages, 1 hour retention)
- Perplexity Sonar API integration for AI responses
- Live monitoring dashboard with PySimpleGUI
- Setup wizard for first-time configuration
- Comprehensive logging (main log + API debug log)

Files added:
- config.py: Configuration management from .env and config.json
- utils.py: MentionDetector and Logger utility classes
- memory.py: ConversationMemory for persistent chat history
- ai_provider.py: PerplexityProvider for API integration
- gui.py: Dashboard and SetupWizard GUI components
- chatbot.py: Main EugenBot orchestrator with IRC handling
- requirements.txt: Python dependencies
- .env.example: Template for environment variables
- .gitignore: Renamed from gitignore for proper Git usage

Updated:
- README.md: Complete usage instructions and documentation

The bot is ready to use - users just need to add their API keys and run python chatbot.py

gitignore

@@ -1,92 +0,0 @@
-# Python Virtual Environment
-venv/
-env/
-ENV/
-.venv
-
-# Python Cache
-__pycache__/
-*.py[cod]
-*$py.class
-*.so
-.Python
-build/
-develop-eggs/
-dist/
-downloads/
-eggs/
-.eggs/
-lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-pip-wheel-metadata/
-share/python-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-MANIFEST
-
-# IDE & Editor
-.vscode/
-.idea/
-*.swp
-*.swo
-*~
-.DS_Store
-*.sublime-project
-*.sublime-workspace
-.project
-.pydevproject
-.settings/
-
-# Environment Variables (SECRETS!)
-.env
-.env.local
-.env.*.local
-*.key
-*.pem
-
-# Logs
-logs/
-*.log
-*.log.*
-eugen.log
-api_debug.log
-
-# OS specific
-.DS_Store
-Thumbs.db
-Desktop.ini
-.AppleDouble
-.LSOverride
-
-# Testing
-.pytest_cache/
-.coverage
-htmlcov/
-.tox/
-.hypothesis/
-
-# IDE Temp Files
-.vscode/
-.idea/
-*.iml
-
-# Chat History (optional - keep für Backup, aber nicht unbedingt committen)
-# Wenn ihr die History NICHT committen wollt, uncomment:
-# data/conversations/
-# data/config.json
-
-# Temporary Files
-*.tmp
-*.temp
-*~
-.~lock.*
-
-# OS Specific
-.Spotlight-V100
-.Trashes
-ehthumbs.db