Testing: Integrate Storybook and Chromatic for visual testing

Currently, we are using an example app to test our components. It requires a good amount of setup of emulators and it's not possible to preview new features in isolation.

However Storybook:

• Allows developers to work on individual UI components in a self-contained environment, without needing the full application context.
• Developers can quickly iterate and make changes to components, seeing the results instantly without needing to navigate through the application.
• Isolating components makes it easier to identify and fix issues, and ensures each component functions as intended.
• Allows the developers to change the props spontaneously and see how the components change instantly.
• Integrating it with Chromatic would allow us to have CI tests, and automatic visual change highlights.