feat: add folder support for workflows (fixes #70)

workflows/Convertkit/0723_Convertkit_Create_Triggered.json

@@ -0,0 +1,26 @@
+{
+  "id": "28",
+  "name": "Receive updates when a subscriber is added through a form in ConvertKit",
+  "nodes": [
+    {
+      "name": "ConvertKit Trigger",
+      "type": "n8n-nodes-base.convertKitTrigger",
+      "position": [
+        690,
+        260
+      ],
+      "webhookId": "55336480-7be1-4432-8fc8-d860572c1c18",
+      "parameters": {
+        "event": "formSubscribe",
+        "formId": 1657198
+      },
+      "credentials": {
+        "convertKitApi": "convertkit"
+      },
+      "typeVersion": 1
+    }
+  ],
+  "active": false,
+  "settings": {},
+  "connections": {}
+}