Rishal/multi step form

[rishalrana]

Summary

• Adds a new multi-step-form artifact component to the HAX SDK for building wizard-style, multi-step form experiences
• Features a stepper progress bar with visual step indicators:
  • Checkmark icon for completed steps
  • Numbered circle for the active step
  • Muted circle for upcoming steps
  • Horizontal connector lines between steps
• Supports configurable form fields with types: text, email, password, number, tel, and url
• Includes per-field validation with error messages, required field indicators, and placeholder text
• Optional badge display and customizable button labels (back/continue)
• Includes Zod schemas for type validation
• Exports HAXMultiStepForm component, useMultiStepFormAction hook, and all related types