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/index.js

@@ -6,6 +6,7 @@ import { MESSAGE_STATUS } from 'shared/constants/messages';
 import wootConstants from 'dashboard/constants/globals';
 import { BUS_EVENTS } from '../../../../shared/constants/busEvents';
 import { emitter } from 'shared/helpers/mitt';
+import { CONTENT_TYPES } from 'dashboard/components-next/message/constants.js';
 
 const state = {
   allConversations: [],
@@ -24,6 +25,10 @@ const state = {
   copilotAssistant: {},
 };
 
+const getConversationById = _state => conversationId => {
+  return _state.allConversations.find(c => c.id === conversationId);
+};
+
 // mutations
 export const mutations = {
   [types.SET_ALL_CONVERSATION](_state, conversationList) {
@@ -270,6 +275,36 @@ export const mutations = {
     }
   },
 
+  [types.UPDATE_CONVERSATION_CALL_STATUS](
+    _state,
+    { conversationId, callStatus }
+  ) {
+    const chat = getConversationById(_state)(conversationId);
+    if (!chat) return;
+
+    chat.additional_attributes = {
+      ...chat.additional_attributes,
+      call_status: callStatus,
+    };
+  },
+
+  [types.UPDATE_MESSAGE_CALL_STATUS](_state, { conversationId, callStatus }) {
+    const chat = getConversationById(_state)(conversationId);
+    if (!chat) return;
+
+    const lastCall = (chat.messages || []).findLast(
+      m => m.content_type === CONTENT_TYPES.VOICE_CALL
+    );
+
+    if (!lastCall) return;
+
+    lastCall.content_attributes ??= {};
+    lastCall.content_attributes.data = {
+      ...lastCall.content_attributes.data,
+      status: callStatus,
+    };
+  },
+
   [types.SET_ACTIVE_INBOX](_state, inboxId) {
     _state.currentInbox = inboxId ? parseInt(inboxId, 10) : null;
   },