✨ Add DeepL Node (#1551)

* Created the node for DeepL translator tool

Still missing a few additional fields but functionality is ok for most cases.

* Added optional fields for Deepl and separated description to a separate file

* Fixed linting issue

* 🎨 Replace PNG with SVG icon

* 💄 Adjust style to codebase conventions

* 🔨 Refactor types

* ⚡ Simplify error handling

* ⚡ Add always open edit window for text field

* ✏️ Edit descriptions in text operations

* ⚡ Fix source language for English

EN-GB and EN-US are not supported as source languages, but EN is.

* 💄 Apply cosmetic changes

* ⚡ Small improvement

* ⚡ Remove not needed Authentication selection

Co-authored-by: Iván Ovejero <ivov.src@gmail.com>
Co-authored-by: ricardo <ricardoespinoza105@gmail.com>
Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/nodes-base/nodes/DeepL/TextDescription.ts

@@ -0,0 +1,125 @@
+import {
+	INodeProperties,
+} from 'n8n-workflow';
+
+export const textOperations = [
+	{
+		displayName: 'Text',
+		name: 'text',
+		type: 'string',
+		default: '',
+		description: 'Input text to translate.',
+		required: true,
+		typeOptions: {
+			alwaysOpenEditWindow: true,
+		},
+		displayOptions: {
+			show: {
+				operation: [
+					'translate',
+				],
+			},
+		},
+	},
+	{
+		displayName: 'Target Language',
+		name: 'translateTo',
+		type: 'options',
+		typeOptions: {
+			loadOptionsMethod: 'getLanguages',
+		},
+		default: '',
+		description: 'Language to translate to.',
+		required: true,
+		displayOptions: {
+			show: {
+				operation: [
+					'translate',
+				],
+			},
+		},
+	},
+	{
+		displayName: 'Additional Fields',
+		name: 'additionalFields',
+		type: 'collection',
+		placeholder: 'Add Field',
+		default: {},
+		options: [
+			{
+				displayName: 'Source Language',
+				name: 'sourceLang',
+				type: 'options',
+				default: '',
+				description: 'Language to translate from.',
+				typeOptions: {
+					loadOptionsMethod: 'getLanguages',
+				},
+			},
+			{
+				displayName: 'Split Sentences',
+				name: 'splitSentences',
+				type: 'options',
+				default: '1',
+				description: 'How the translation engine should split sentences.',
+				options: [
+					{
+						name: 'Interpunction Only',
+						value: 'nonewlines',
+						description: 'Split text on interpunction only, ignoring newlines.',
+					},
+					{
+						name: 'No Splitting',
+						value: '0',
+						description: 'Treat all text as a single sentence.',
+					},
+					{
+						name: 'On Punctuation and Newlines',
+						value: '1',
+						description: 'Split text on interpunction and newlines.',
+					},
+				],
+			},
+			{
+				displayName: 'Preserve Formatting',
+				name: 'preserveFormatting',
+				type: 'options',
+				default: '0',
+				description: 'Whether the translation engine should respect the original formatting, even if it would usually correct some aspects.',
+				options: [
+					{
+						name: 'Apply corrections',
+						value: '0',
+						description: 'Fix punctuation at the beginning and end of sentences and fixes lower/upper caseing at the beginning.',
+					},
+					{
+						name: 'Do not correct',
+						value: '1',
+						description: 'Keep text as similar as possible to the original.',
+					},
+				],
+			},
+			{
+				displayName: 'Formality',
+				name: 'formality',
+				type: 'options',
+				default: 'default',
+				description: 'How formal or informal the target text should be. May not be supported with all languages.',
+				options: [
+					{
+						name: 'Formal',
+						value: 'more',
+					},
+					{
+						name: 'Informal',
+						value: 'less',
+					},
+					{
+						name: 'Neutral',
+						value: 'default',
+					},
+				],
+			},
+		],
+	},
+] as INodeProperties[];