QR-Code-Gutscheine für SuiteCRM-Leads zuweisen und validieren

## Coupon assignment and simple validation system This workflow is designed to manage the assignment and validation of unique QR code coupons within a lead generation system. The process begins with a webhook that receives data from a user-filled form, containing information such as name, surname, email, and phone number. This data is then processed to check if the lead already exists in the system, preventing duplicates. DISCLAIMER: The system is very simple and basic but can be improved and made very efficient through specific controls and new implementations