docs(notion): add auth and new DB items trigger

packages/docs/pages/apps/notion/connection.md

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+# Notion
+
+:::info
+This page explains the steps you need to follow to set up the Notion
+connection in Automatisch. If any of the steps are outdated, please let us know!
+:::
+
+1. Go to the [link](https://www.notion.so/my-integrations) to **create an
+   integration** on Notion API.
+1. Fill out the Name field.
+1. Click on the **Submit** button.
+1. Go to the **Capabilities** page via the sidebar.
+1. Select the **Read user information without email addresses** option under the **User Capabilities** section and then save the changes.
+1. Go to the **Distribution** page via the sidebar.
+1. Make the integration public by enabling the checkbox.
+1. Fill out the necessary fields under the **Organization Information** section.
+1. Copy **OAuth Redirect URL** from Automatisch and paste it to the **Redirect URIs** field.
+1. Click on the **Submit** button.
+1. Accept making the integration public by clicking on the **Continue** button in the dialog.
+1. Copy **OAuth client ID** and **OAuth client secret** values and paste them into Automatisch as **Client ID** and **Client Secret**, respectively.
+1. Click **Submit** button on Automatisch.
+1. Now, you can start using the Notion connection with Automatisch.

packages/docs/pages/apps/notion/triggers.md

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+---
+favicon: /favicons/notion.svg
+items:
+  - name: New database items
+    desc: Triggers when a new database item is created.
+---
+
+<script setup>
+  import CustomListing from '../../components/CustomListing.vue'
+</script>
+
+<CustomListing />