✨ Add Lemlist node (#1506)

* 🎉 Register node and credentials

* ⚡ Add credentials file

* 🎨 Add SVG icon

* ⚡ Add generic functions file

* ⚡ Add preliminary node stub

* ⚡ Add resource description stubs

* ⚡ Extract get CSV from getAll

* ⚡ Implement lead:create

* ⚡ Implement all lead operations

* ⚡ Implement unsubscribe:create and delete

* ⚡ Preload campaigns

* 🔥 Remove logging

* 🔥 Remove operation per feedback

* 🎨 Prettify error message

* ⚡ Implement unsubscribe:getAll

* ⚡ Add trigger and small improvements

* ⚡ Minor improvement and fixes

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

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

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