Adds a docker-compose.yml to manage the OpenWA, Chat UI, and WhatsApp Router services.
Includes:
- Dockerfile and basic Node.js skeleton for Chat UI.
- Dockerfile and basic Node.js skeleton for WhatsApp Router.
- docker-compose.yml defining the three services, including:
- Placeholder for OpenWA image (you must configure this).
- Build contexts for UI and router.
- Port mappings.
- Environment variable examples.
- Volume for OpenWA session persistence.
- Updated README.md with detailed setup, configuration, and usage instructions.
