[TRIGGER] Chat trigger

**Describe the event source. What app is this for, and what event does the trigger correspond to?**
I would like a chat trigger to embed on my website. Everytime a message is sent on the chat, the chat trigger is... triggered and the workflow executes. An other action later in the workflow can be used to reply on the chat.

**Other alternative**
Build a workflow with webhook trigger and response to webhook action. Create an HTML widget like `npm @n8n/chat` to perform a POST request to the trigger and wait for reply to send the response. It could be done but with coding skills. It would be awesome to do it in no code.