⚡ Add and update codex files (#1834)

* ✨ Add and update codex files

* 🔨 Fix codex format

* 🔨 Fix codex format for remaining files

packages/nodes-base/nodes/NoOp.node.json

@@ -22,6 +22,11 @@
 				"icon": "☀️",
 				"url": "https://n8n.io/blog/2021-the-year-to-automate-the-new-you-with-n8n/"
 			},
+			{
+				"label": "Automate your data processing pipeline in 9 steps",
+				"icon": "⚙️",
+				"url": "https://n8n.io/blog/automate-your-data-processing-pipeline-in-9-steps-with-n8n/"
+			},
 			{
 				"label": "5 workflow automations for Mattermost that we love at n8n",
 				"icon": "🤖",
@@ -38,5 +43,10 @@
 				"url": "https://n8n.io/blog/benefits-of-automation-and-n8n-an-interview-with-hubspots-hugh-durkin/"
 			}
 		]
+	},
+	"subcategories": {
+		"Core Nodes": [
+			"Helpers"
+		]
 	}
 }