feat: notification rules outline

src/pages/mini-apps/commands/notifications.mdx

@@ -1 +1,11 @@
-# Coming Soon
+# Notifications
+
+## Rules
+
+Currently we only allow transactional notifications. No promotional notifications are allowed as of now.
+We will closely monitor what notifications are sent, and revoke permissions if necessary.
+
+## Best practices
+
+-   use localized text - you can get it from the `x-accept-language` header,
+-   make the notifications somewhat personalized, use the username instead of wallet address