feat: Add Chat Trigger node (#7409)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>
Co-authored-by: Jesper Bylund <mail@jesperbylund.com>
Co-authored-by: OlegIvaniv <me@olegivaniv.com>
Co-authored-by: Deborah <deborah@starfallprojects.co.uk>
Co-authored-by: Jan Oberhauser <janober@users.noreply.github.com>
Co-authored-by: Jon <jonathan.bennetts@gmail.com>
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>
Co-authored-by: Michael Kret <88898367+michael-radency@users.noreply.github.com>
Co-authored-by: Giulio Andreini <andreini@netseven.it>
Co-authored-by: Mason Geloso <Mason.geloso@gmail.com>
Co-authored-by: Mason Geloso <hone@Masons-Mac-mini.local>
Co-authored-by: Mutasem Aldmour <mutasem@n8n.io>

packages/@n8n/nodes-langchain/package.json

@@ -91,6 +91,7 @@
       "dist/nodes/tools/ToolWolframAlpha/ToolWolframAlpha.node.js",
       "dist/nodes/tools/ToolWorkflow/ToolWorkflow.node.js",
       "dist/nodes/trigger/ManualChatTrigger/ManualChatTrigger.node.js",
+      "dist/nodes/trigger/ChatTrigger/ChatTrigger.node.js",
       "dist/nodes/vector_store/VectorStoreInMemory/VectorStoreInMemory.node.js",
       "dist/nodes/vector_store/VectorStoreInMemoryInsert/VectorStoreInMemoryInsert.node.js",
       "dist/nodes/vector_store/VectorStoreInMemoryLoad/VectorStoreInMemoryLoad.node.js",
@@ -107,6 +108,7 @@
     ]
   },
   "devDependencies": {
+    "@types/basic-auth": "^1.1.3",
     "@types/express": "^4.17.6",
     "@types/html-to-text": "^9.0.1",
     "@types/json-schema": "^7.0.12",
@@ -128,6 +130,7 @@
     "@qdrant/js-client-rest": "1.7.0",
     "@supabase/supabase-js": "2.38.5",
     "@xata.io/client": "0.25.3",
+    "basic-auth": "2.0.1",
     "cohere-ai": "6.2.2",
     "d3-dsv": "2.0.0",
     "epub2": "3.0.1",