Added QR code generation for multiple messaging platforms on the inbox
finish setup page. So users can scan QR codes to instantly test their
newly created channels.
**Supported Platforms**
- **WhatsApp**: QR code for `https://wa.me/{phone_number}`
- Supports both WhatsApp Cloud and Twilio WhatsApp inboxes
- **Facebook Messenger**: QR code for `https://m.me/{page_id}`
- All Facebook page inboxes
- **Telegram**: QR code for `https://t.me/{bot_name}`
- All Telegram bot inboxes
**How to test the changes**
You can test these changes by navigating to this URL
`{BASE_URL}/app/accounts/{account_id}/settings/inboxes/new/{inbox_id}/finish`
and simply replacing the inbox ID with one you've already created.
**Preview**
<img width="2432" height="1474" alt="CleanShot 2025-08-21 at 15 40
59@2x"
src="https://github.com/user-attachments/assets/4226133b-9793-48ca-bf79-903b7e003ef3"
/>
---------
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: iamsivin <iamsivin@gmail.com>
