chore: added basic jest testing support

also added an example test for the counter in the components.tsx file to demonstrate functionality of testing configuration. installed all dependencies for testing using --save-dev to make sure they are stored as dev dependencies

ref: N25B-212

test/components.test.tsx

@@ -0,0 +1,12 @@
+import userEvent from '@testing-library/user-event';
+import { render, screen} from '@testing-library/react';
+import Counter from '../src/components/components';
+
+describe('Counter component', () => {
+  test('increments count', async () => {
+    render(<Counter />);
+    const button = screen.getByRole('button', { name: /count is 0/i });
+    await userEvent.click(button);
+    expect(screen.getByText(/count is 1/i)).toBeInTheDocument();
+  });
+});