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

workflows/Automate/1123_Automate.json

@@ -0,0 +1,41 @@
+{
+  "nodes": [
+    {
+      "name": "Mock Data",
+      "type": "n8n-nodes-base.function",
+      "position": [
+        550,
+        300
+      ],
+      "parameters": {
+        "functionCode": "return [{json:[\"item-1\", \"item-2\", \"item-3\", \"item-4\"]}];"
+      },
+      "typeVersion": 1
+    },
+    {
+      "name": "Function",
+      "type": "n8n-nodes-base.function",
+      "position": [
+        750,
+        300
+      ],
+      "parameters": {
+        "functionCode": "return items[0].json.map(item => {\n  return {\n    json: {\n      data:item\n    },\n  }\n});\n"
+      },
+      "typeVersion": 1
+    }
+  ],
+  "connections": {
+    "Mock Data": {
+      "main": [
+        [
+          {
+            "node": "Function",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    }
+  }
+}