feat(openrouter): add app with create chat completion action

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

@@ -0,0 +1,12 @@
+---
+favicon: /favicons/openrouter.svg
+items:
+  - name: Create chat completion
+    desc: Creates a chat completion.
+---
+
+<script setup>
+  import CustomListing from '../../components/CustomListing.vue'
+</script>
+
+<CustomListing />

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

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+# OpenRouter
+
+1. Go to [API Keys page](https://openrouter.ai/settings/keys) on OpenRouter.
+2. Create a new key.
+3. Paste the key into the `API Key` field in Automatisch.
+4. Write any screen name to be displayed in Automatisch.
+5. Click `Save`.
+6. Start using OpenRouter integration with Automatisch!