Implement the Snackbar component to handle snackbar creation and removal
based on the provided configuration. The Snackbar class consists of a
constructor method that initializes the configuration, a create method
to create snackbars, and a remove method to remove snackbars. This
implementation ensures that the provided configuration is verified
before creating or removing snackbars.

Replaced the `createSnackbar` method with the `renderSnackbar` method in
the Snackbar class to streamline the process of rendering. Directly
rendering the Snackbar makes more sense and reduces complexity when
using the Snackbar class.

Removed an unnecessary parameter from the `removeSnackbar` method to
streamline its implementation and improve clarity.

Merged the render and remove methods in the Snackbar class to simplify
its interface and enhance clarity. The unnecessary parameter has been
removed, resulting in a more streamlined and user-friendly implementation.

This feature introduces a new function for rendering a snackbar message
and then automatically removing it after a certain duration. The
function combines the rendering and removal processes into a single
action, enhancing usability and reducing complexity.

Updated import paths in component files to use module resolution aliases
defined in jsconfig.json. This change improves code readability and
maintainability by replacing relative paths with aliases.

Combine multiple test files into a single test file to reduceunnecessary module tests. This change simplifies navigation and improvescodebase organization.

Add tests to verify that the Snackbar component correctly renders and
removes messages with valid configurations.