Add Ollama API integration and enhance bot functionality

- Updated .env.example to include OLLAMA_API_KEY.
- Added Ollama to dependencies in pyproject.toml.
- Refactored main.py to incorporate Ollama for web search capabilities.
- Removed misc.py as its functionality has been integrated into main.py.
- Enhanced message handling and memory management for improved performance.

pyproject.toml

@@ -9,6 +9,7 @@ dependencies = [
     "discord-py",
     "httpx",
     "numpy",
+    "ollama",
     "openai",
     "opencv-contrib-python-headless",
     "psutil",