Draft: Merge branch 'added country code' into 'develop'

Description: Updated login OTP system to:

Integrate package for handling international phone numbers.

Skip India OTP service for non-Indian numbers.

Require WhatsApp number verification for international users.

Type of Change:

Feature Development

Testing:

Tested on desktop

Tested on mobile

Tested in different browsers

Screenshots (if applicable):

Screen Recording: https://drive.google.com/file/d/1j6-ydsz4MVbZ7ECzXUnrzaqIt2VNhrlR/view?usp=sharing

Link to code walkthrough: https://code.swecha.org/Manikanta4432/frontend

Checklist:

Code follows project style guidelines

Self-review completed

No console errors

TypeScript types are correct