Added

• Ktor integration to automatically validate received payloads. (#43)
• Public constructors for ConstraintViolationSet and ConstraintViolation.

<img width=700 height=350 src=https://github.com/user-attachments/assets/a1dc2ae1-b5f0-479b-92c2-d2ddff93cb91 />

<img width=700 height=350 src=https://github.com/user-attachments/assets/64bb6213-8a58-493c-95a9-d812de48d030 />