test(Code Node): Unit tests (no-changelog) (#5373)

* ⚡ test setup

* ⚡️basic test with run once for all and each items

* 🎨 fix linting error

* ⚡️update to new Helper.setup(tests)

* ⚡ migrate tests to pin data approach

packages/nodes-base/nodes/Code/test/Code.node.test.ts

@@ -0,0 +1,5 @@
+import { testWorkflows, getWorkflowFilenames } from '../../../test/nodes/Helpers';
+
+const workflows = getWorkflowFilenames(__dirname);
+
+describe('Test Code Node', () => testWorkflows(workflows));