feat: Add AI tool building capabilities (#7336)

Github issue / Community forum post (link here to close automatically):
https://community.n8n.io/t/langchain-memory-chat/23733

---------

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Val <68596159+valya@users.noreply.github.com>
Co-authored-by: Alex Grozav <alex@grozav.com>
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>
Co-authored-by: Deborah <deborah@starfallprojects.co.uk>
Co-authored-by: Jesper Bylund <mail@jesperbylund.com>
Co-authored-by: Jon <jonathan.bennetts@gmail.com>
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/tsconfig.build.json

@@ -0,0 +1,17 @@
+{
+	"extends": ["./tsconfig.json"],
+	"compilerOptions": {
+		"types": ["node"],
+		"noEmit": false,
+		"declaration": true,
+		"outDir": "dist",
+		"tsBuildInfoFile": "dist/build.tsbuildinfo"
+	},
+	"include": [
+		"credentials/**/*.ts",
+		"nodes/**/*.ts",
+		"nodes/**/*.json",
+		"credentials/translations/**/*.json"
+	],
+	"exclude": ["nodes/**/*.test.ts", "test/**"]
+}