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

workflows/Cron/0822_Cron_Postgres_Automation_Scheduled.json

@@ -0,0 +1,78 @@
+{
+  "id": "33",
+  "name": "Postgres Data Ingestion",
+  "nodes": [
+    {
+      "name": "Cron",
+      "type": "n8n-nodes-base.cron",
+      "position": [
+        300,
+        250
+      ],
+      "parameters": {
+        "triggerTimes": {
+          "item": [
+            {
+              "mode": "everyMinute"
+            }
+          ]
+        }
+      },
+      "typeVersion": 1
+    },
+    {
+      "name": "Function",
+      "type": "n8n-nodes-base.function",
+      "position": [
+        500,
+        250
+      ],
+      "parameters": {
+        "functionCode": "var today = new Date();\nvar date = today.getFullYear()+'-'+(today.getMonth()+1)+'-'+today.getDate();\nvar time = today.getHours() + \":\" + today.getMinutes() + \":\" + today.getSeconds();\nvar dateTime = date+' '+time;\n\nitems[0].json.sensor_id = 'humidity01';\nitems[0].json.value = Math.ceil(Math.random()*100);\nitems[0].json.time_stamp = dateTime;\nitems[0].json.notification = false;\n\nreturn items;"
+      },
+      "typeVersion": 1
+    },
+    {
+      "name": "Postgres",
+      "type": "n8n-nodes-base.postgres",
+      "position": [
+        680,
+        250
+      ],
+      "parameters": {
+        "table": "n8n",
+        "columns": "sensor_id,value,time_stamp,notification"
+      },
+      "credentials": {
+        "postgres": "Postgres"
+      },
+      "typeVersion": 1
+    }
+  ],
+  "active": true,
+  "settings": {},
+  "connections": {
+    "Cron": {
+      "main": [
+        [
+          {
+            "node": "Function",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Function": {
+      "main": [
+        [
+          {
+            "node": "Postgres",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    }
+  }
+}