feat(OpenAI Node): Add a node to work with OpenAI (#4932)

* feat(OpenAI Node): Add a node to work with OpenAI

* Added codex file for OpenAi node

* Minor tweaks to Operation Image.

* Minor tweaks to Resource Text.

* Minor copy modification to Image:Create.

* Removed "a Text" in Text operations names.

* ⚡ Connect Response Format parameter and other improvements

* ✨ Add "filter" postReceiveAction

* ⚡ Rename operations and add spelling mistake again to example

* ⚡ Rename another operation

Co-authored-by: Jonathan Bennetts <jonathan.bennetts@gmail.com>
Co-authored-by: Giulio Andreini <andreini@netseven.it>

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

@@ -0,0 +1,54 @@
+import { INodeType, INodeTypeDescription } from 'n8n-workflow';
+import { imageFields, imageOperations } from './ImageDescription';
+import { textFields, textOperations } from './TextDescription';
+
+export class OpenAi implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'OpenAI',
+		name: 'openAi',
+		icon: 'file:openAi.svg',
+		group: ['transform'],
+		version: 1,
+		subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
+		description: 'Consume Open AI',
+		defaults: {
+			name: 'OpenAI',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'openAiApi',
+				required: true,
+			},
+		],
+		requestDefaults: {
+			baseURL: 'https://api.openai.com',
+		},
+		properties: [
+			{
+				displayName: 'Resource',
+				name: 'resource',
+				type: 'options',
+				noDataExpression: true,
+				options: [
+					{
+						name: 'Image',
+						value: 'image',
+					},
+					{
+						name: 'Text',
+						value: 'text',
+					},
+				],
+				default: 'text',
+			},
+
+			...imageOperations,
+			...imageFields,
+
+			...textOperations,
+			...textFields,
+		],
+	};
+}