feat: Voice channel creation Flow (#11775)

This PR introduces a new channel type for voice conversations.

ref: #11481 

## Changes

- Add database migration for channel_voice table with phone_number and
provider_config
- Create Channel::Voice model with E.164 phone number validation and
Twilio config validation
- Add voice channel association to Account model
- Extend inbox helpers and types to support voice channels
- Add voice channel setup UI with Twilio configuration form
- Include voice channel in channel factory and list components
- Add API routes and store actions for voice channel creation
- Add comprehensive translations for voice channel management

---------

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: iamsivin <iamsivin@gmail.com>

app/javascript/dashboard/helper/inbox.js

@@ -10,6 +10,7 @@ export const INBOX_TYPES = {
   LINE: 'Channel::Line',
   SMS: 'Channel::Sms',
   INSTAGRAM: 'Channel::Instagram',
+  VOICE: 'Channel::Voice',
 };
 
 const INBOX_ICON_MAP_FILL = {
@@ -22,6 +23,7 @@ const INBOX_ICON_MAP_FILL = {
   [INBOX_TYPES.TELEGRAM]: 'i-ri-telegram-fill',
   [INBOX_TYPES.LINE]: 'i-ri-line-fill',
   [INBOX_TYPES.INSTAGRAM]: 'i-ri-instagram-fill',
+  [INBOX_TYPES.VOICE]: 'i-ri-phone-fill',
 };
 
 const DEFAULT_ICON_FILL = 'i-ri-chat-1-fill';
@@ -36,6 +38,7 @@ const INBOX_ICON_MAP_LINE = {
   [INBOX_TYPES.TELEGRAM]: 'i-ri-telegram-line',
   [INBOX_TYPES.LINE]: 'i-ri-line-line',
   [INBOX_TYPES.INSTAGRAM]: 'i-ri-instagram-line',
+  [INBOX_TYPES.VOICE]: 'i-ri-phone-line',
 };
 
 const DEFAULT_ICON_LINE = 'i-ri-chat-1-line';
@@ -47,6 +50,7 @@ export const getInboxSource = (type, phoneNumber, inbox) => {
 
     case INBOX_TYPES.TWILIO:
     case INBOX_TYPES.WHATSAPP:
+    case INBOX_TYPES.VOICE:
       return phoneNumber || '';
 
     case INBOX_TYPES.EMAIL:
@@ -85,6 +89,9 @@ export const getReadableInboxByType = (type, phoneNumber) => {
     case INBOX_TYPES.LINE:
       return 'line';
 
+    case INBOX_TYPES.VOICE:
+      return 'voice';
+
     default:
       return 'chat';
   }
@@ -124,6 +131,9 @@ export const getInboxClassByType = (type, phoneNumber) => {
     case INBOX_TYPES.INSTAGRAM:
       return 'brand-instagram';
 
+    case INBOX_TYPES.VOICE:
+      return 'phone';
+
     default:
       return 'chat';
   }