📝 (whatsapp) Add a "Create WhatsApp app" guide

apps/docs/docs/embed/whatsapp/_category_.json

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+{
+  "label": "WhatsApp"
+}

apps/docs/docs/embed/whatsapp/create-meta-app.md

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+# Create a WhatsApp Meta app
+
+## 1. Create a Facebook Business account
+
+1. Head over to https://business.facebook.com and log in
+2. Create a new business account on the left side bar
+
+:::note
+It is possible that Meta automatically restricts your newly created Business account. In that case, make sure to verify your identity to proceed.
+:::
+
+## 2. Create a Meta app
+
+1. Head over to https://developers.facebook.com/apps
+2. Click on Create App
+3. "What do you want your app to do?", select `Other`.
+4. Select `Business` type
+5. Give it any name and select your newly created Business Account
+6. On the app page, look for `WhatsApp` product and enable it

apps/docs/docs/embed/whatsapp/overview.md

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+---
+sidebar_position: 1
+slug: /embed/whatsapp
+title: Overview
+---
+
 # WhatsApp
 
 WhatsApp is currently available as a private beta test. If you'd like to try it out, reach out to support@typebot.io.