chore(lp): 📦️ Import existing Landing page

apps/landing-page/lib/landbot.ts

@@ -0,0 +1,16 @@
+const loadLandbot = (): Promise<void> =>
+  new Promise((resolve) => {
+    const existingScript = document.getElementById('landbot-lib')
+    if (!existingScript) {
+      const script = document.createElement('script')
+      script.src = 'https://static.landbot.io/landbot-3/landbot-3.0.0.js'
+      script.id = 'landbot-lib'
+      document.body.appendChild(script)
+      script.onload = () => {
+        resolve()
+      }
+    }
+    if (existingScript) resolve()
+  })
+
+export default loadLandbot