✨ Add LignvaNex Node (#1194)

* ✨ Add LignvaNex node

* ⚡ Small improvement to LingvaNext Node

Improvements to #1191

Co-authored-by: Tanay Pant <tanaypant@protonmail.com>

packages/nodes-base/credentials/LingvaNexApi.credentials.ts

@@ -0,0 +1,18 @@
+import {
+	ICredentialType,
+	NodePropertyTypes,
+} from 'n8n-workflow';
+
+export class LingvaNexApi implements ICredentialType {
+	name = 'lingvaNexApi';
+	displayName = 'LingvaNex API';
+	documentationUrl = 'lingvaNex';
+	properties = [
+		{
+			displayName: 'API Key',
+			name: 'apiKey',
+			type: 'string' as NodePropertyTypes,
+			default: '',
+		},
+	];
+}