improve repo structure

packages/overlayscrollbars-react/test/OverlayScrollbarsComponent.test.tsx

@@ -0,0 +1,9 @@
+import { test, expect } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import { OverlayScrollbarsComponent } from '~/overlayscrollbars-react';
+
+test('renders learn react link', () => {
+  render(<OverlayScrollbarsComponent msg="hi" />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});