feat(rss): add new items in feed trigger

packages/backend/src/apps/rss/triggers/new-items-in-feed/index.ts

@@ -0,0 +1,33 @@
+import defineTrigger from '../../../../helpers/define-trigger';
+import newItemsInFeed from './new-items-in-feed';
+
+export default defineTrigger({
+  name: 'New items in feed',
+  key: 'newItemsInFeed',
+  description: 'Triggers on new RSS feed items.',
+  pollInterval: 15,
+  substeps: [
+    {
+      key: 'chooseTrigger',
+      name: 'Set up trigger',
+      arguments: [
+        {
+          label: 'Feed URL',
+          key: 'feedUrl',
+          type: 'string',
+          required: true,
+          description: 'Paste your publicly accessible RSS URL here.',
+          variables: false,
+        },
+      ],
+    },
+    {
+      key: 'testStep',
+      name: 'Test trigger',
+    },
+  ],
+
+  async run($) {
+    await newItemsInFeed($);
+  },
+});