Stop ModularServer asynchronously #14
Description
What's the problem this feature will solve?
Only way to stop ModularServer is when control is with the user in the terminal and pressing 'Control+c'. When running through IDE, control is no longer with user, there is no direct way to stop the server. Running visualization code throws error, RuntimeError: This event loop is already running or OSError: [Errno 48] Address already in use even after restarting the kernel and/or closing the browser.
Describe the solution you'd like
Add a stop() method to ModularServer class.
Additional context
N/A