adds llm.txt file to docs

apps/site/app/[locale]/llm/route.ts

@@ -0,0 +1,30 @@
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
+
+import { NextResponse } from 'next/server';
+
+// This is the Route Handler for the `GET` method which handles the request
+// for a static llm.txt file
+export const GET = async () => {
+  try {
+    // Read the content from a file
+    const filePath = join(process.cwd(), 'public', 'llm.txt');
+    const content = readFileSync(filePath, 'utf8');
+
+    return new NextResponse(content, {
+      headers: { 'Content-Type': 'text/plain' },
+    });
+  } catch (error) {
+    console.error('Error reading llm-full.txt file:', error);
+    return new NextResponse('Error loading content', {
+      status: 500,
+      headers: { 'Content-Type': 'text/plain' },
+    });
+  }
+};
+
+// Enforces that this route is used as static rendering
+export const dynamic = 'force-static';
+
+// Ensures that this endpoint is invalidated and re-executed every X minutes
+export const revalidate = 300;