docs: Restructure apps documentation, add triggers and actions

packages/docs/pages/apps/twilio/actions.md

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+---
+items:
+  - name: Send SMS
+    desc: Send an SMS
+    avatar: /favicons/twilio.svg
+---
+
+<script setup>
+  import CustomListing from '../../components/CustomListing.vue'
+</script>
+
+<CustomListing />

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

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+# Twilio
+
+:::info
+This page explains the steps you need to follow to set up the Twilio connection in Automatisch. If any of the steps are outdated, please let us know!
+:::
+
+1. Go to the Twilio [console page](https://console.twilio.com)
+2. Copy **Account SID** and paste it to **Account SID** field on the
+   Automatisch connection creation page.
+3. Copy **Auth Token** and paste it to **Auth Token** field on the
+   Automatisch connection creation page.
+4. Click **Submit** button on Automatisch.
+5. Now you can start using the new Twilio connection!

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

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+---
+items:
+  - name: Receive SMS
+    desc: Will be triggered when a new SMS is received.
+    avatar: /favicons/twilio.svg
+---
+
+<script setup>
+  import CustomListing from '../../components/CustomListing.vue'
+</script>
+
+<CustomListing />