feat: add console warn deprecation notice to react-chat (COR-4436) (#522)

Author: sofly

packages/react-chat/src/views/ChatWidget/index.tsx

@@ -10,6 +10,11 @@ import ChatWindow from '@/views/ChatWindow';
 
 import { ChatContainer, Container, LauncherContainer } from './styled';
 
+console.warn(
+  '%c⚠️ VoiceFlow Webchat V2 Deprecation Notice\n-------------------------------------------\nThis version will reach end-of-support on April 15th, 2025. To continue receiving updates and support, please upgrade to the latest version. Migration guide: https://docs.voiceflow.com/docs/web-chat-migration',
+  'font-size: 18px; font-weight: bold;'
+);
+
 interface ChatWidgetProps extends React.PropsWithChildren {
   shadowRoot?: ShadowRoot;
   chatAPI: VoiceflowChat | undefined;