✨ Add OneSimpleAPI Node (#2360)

* Start of OneSimpleAPI Node

* Node functionality is complete

* ⚡ Improvements to #2357

* ⚡ Add internal feedback

* ⚡ Minor improvements

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

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

@@ -0,0 +1,19 @@
+import {
+	ICredentialType,
+	INodeProperties,
+} from 'n8n-workflow';
+
+
+export class OneSimpleApi implements ICredentialType {
+	name = 'oneSimpleApi';
+	displayName = 'One Simple API';
+	documentationUrl = 'oneSimpleApi';
+	properties: INodeProperties[] = [
+		{
+			displayName: 'API Token',
+			name: 'apiToken',
+			type: 'string',
+			default: '',
+		},
+	];
+}