Add Form Validation & Input Sanitization

[Madhavi1108]

Description:
Add client-side validation for forms (age ranges, phone number format, email validation, etc.) before submission.

Tasks:

• Add validation to addMedication.jsx form (dosage times, medication name, etc.)
• Add validation to HealthProfile.jsx (age, height, weight ranges)
• Add visual feedback (red borders, error messages) for invalid inputs
• Consider using a lightweight validation library like zod or yup

[Madhavi1108]

Hi @tirth-patel06,
This a feature I would like to add for SWOC contribution.

[tirth-patel06]

@Madhavi1108
This was already added.

Thanks for exploring the project.