✨ Add n8n training nodes (#1898)

* ⚡ n8n training node

* ⚡ Improvements

* ⚡ cosmetic changes

* ⚡ Improvements

* ⚡ Formatting fix

Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/nodes-base/nodes/N8nTrainingCustomerMessenger.node.ts

@@ -0,0 +1,65 @@
+import {
+	IExecuteFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+	INodeExecutionData,
+	INodeType,
+	INodeTypeDescription,
+} from 'n8n-workflow';
+
+export class N8nTrainingCustomerMessenger implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Customer Messenger (n8n training)',
+		name: 'n8nTrainingCustomeMessenger',
+		icon: 'file:n8nTrainingCustomerMessenger.svg',
+		group: ['transform'],
+		version: 1,
+		description: 'Dummy node used for n8n training',
+		defaults: {
+			name: 'Customer Messenger',
+			color: '#ff6d5a',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		properties: [
+			{
+				displayName: 'Customer ID',
+				name: 'customerId',
+				type: 'string',
+				required: true,
+				default: '',
+			},
+			{
+				displayName: 'Message',
+				name: 'message',
+				type: 'string',
+				required: true,
+				typeOptions: {
+					rows: 4,
+				},
+				default: '',
+			},
+		],
+	};
+
+	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
+		const items = this.getInputData();
+		const returnData: IDataObject[] = [];
+		const length = (items.length as unknown) as number;
+		let responseData;
+
+		for (let i = 0; i < length; i++) {
+
+			const customerId = this.getNodeParameter('customerId', i) as string;
+
+			const message = this.getNodeParameter('message', i) as string;
+
+			responseData = { output: `Sent message to customer ${customerId}:  ${message}` };
+
+			returnData.push(responseData);
+		}
+		return [this.helpers.returnJsonArray(returnData)];
+	}
+}