feat: Voice Channel (#11602)

Enables agents to initiate outbound calls and receive incoming calls
directly from the Chatwoot dashboard, with Twilio as the initial
provider.

Fixes:  #11481 

> This is an integration branch to ensure features works well and might
be often broken on down merges, we will be extracting the
functionalities via smaller PRs into develop

- [x] https://github.com/chatwoot/chatwoot/pull/11775
- [x] https://github.com/chatwoot/chatwoot/pull/12218
- [x] https://github.com/chatwoot/chatwoot/pull/12243
- [x] https://github.com/chatwoot/chatwoot/pull/12268
- [x] https://github.com/chatwoot/chatwoot/pull/12361
- [x]  https://github.com/chatwoot/chatwoot/pull/12782
- [x] #13064
- [ ] Ability for agents to join the inbound calls ( included in this PR
)

---------

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

app/javascript/dashboard/store/modules/conversations/actions.js

@@ -12,6 +12,10 @@ import {
 import messageReadActions from './actions/messageReadActions';
 import messageTranslateActions from './actions/messageTranslateActions';
 import * as Sentry from '@sentry/vue';
+import {
+  handleVoiceCallCreated,
+  handleVoiceCallUpdated,
+} from 'dashboard/helper/voice';
 
 export const hasMessageFailedWithExternalError = pendingMessage => {
   // This helper is used to check if the message has failed with an external error.
@@ -299,7 +303,7 @@ const actions = {
     }
   },
 
-  addMessage({ commit }, message) {
+  addMessage({ commit, rootGetters }, message) {
     commit(types.ADD_MESSAGE, message);
     if (message.message_type === MESSAGE_TYPE.INCOMING) {
       commit(types.SET_CONVERSATION_CAN_REPLY, {
@@ -308,10 +312,12 @@ const actions = {
       });
       commit(types.ADD_CONVERSATION_ATTACHMENTS, message);
     }
+    handleVoiceCallCreated(message, rootGetters?.getCurrentUserID);
   },
 
-  updateMessage({ commit }, message) {
+  updateMessage({ commit, rootGetters }, message) {
     commit(types.ADD_MESSAGE, message);
+    handleVoiceCallUpdated(commit, message, rootGetters?.getCurrentUserID);
   },
 
   deleteMessage: async function deleteLabels(