feat: add Signalwire integration

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

@@ -0,0 +1,12 @@
+---
+favicon: /favicons/signalwire.svg
+items:
+  - name: Receive SMS
+    desc: Triggers when a new SMS is received.
+---
+
+<script setup>
+  import CustomListing from '../../components/CustomListing.vue'
+</script>
+
+<CustomListing />