docs(http-request): add custom request action

packages/docs/pages/apps/http-request/actions.md

@@ -0,0 +1,12 @@
+---
+favicon: /favicons/http-request.svg
+items:
+  - name: Custom Request
+    desc: Makes a custom HTTP request by providing raw details.
+---
+
+<script setup>
+  import CustomListing from '../../components/CustomListing.vue'
+</script>
+
+<CustomListing />

packages/docs/pages/apps/http-request/connection.md

@@ -0,0 +1,3 @@
+# HTTP Request
+
+HTTP Request is a built-in app shipped with Automatisch, and it doesn't need to talk with any other external service to run. So there are no additional steps to use the HTTP Request app.