[@portaljs/ckan][xl] - add ckan package and example using it

examples/ckan-ssg/ckan-example/specs/index.spec.tsx

@@ -0,0 +1,11 @@
+import React from 'react';
+import { render } from '@testing-library/react';
+
+import Index from '../pages/index';
+
+describe('Index', () => {
+  it('should render successfully', () => {
+    const { baseElement } = render(<Index />);
+    expect(baseElement).toBeTruthy();
+  });
+});