feat: Dockerize application and add MySQL logging

This commit introduces Docker and Docker Compose to containerize the application and orchestrate it with a MySQL database.

Key changes include:
- Added a `Dockerfile` to create a container for the Python bot.
- Created a `docker-compose.yml` file to manage the bot and MySQL services.
- Added a `modules/database.py` module to handle database connections and logging with SQLAlchemy.
- Integrated request logging into all command handlers.
- Updated `requirements.txt` with necessary dependencies for MySQL.
- Updated `.env` and `.gitignore` to manage database credentials securely.
- Updated `Readme.md` with instructions on how to run the application using Docker Compose.

.env

@@ -3,4 +3,8 @@ TELEGRAM_TOKEN=TU_TOKEN_NUEVO_AQUI
 
 # Webhooks de n8n (puedes agregar más aquí en el futuro)
 WEBHOOK_CONTRATO=https://flows.soul23.cloud/webhook/DuXh9Oi7SCAMf9
-# WEBHOOK_VACACIONES=https://... (futuro)
+WEBHOOK_PRINT=
+WEBHOOK_VACACIONES=
+
+# --- DATABASE ---
+DATABASE_URL=mysql+mysqlconnector://user:password@db:3306/vanessa_logs