Add asyncio support with AsyncComponent

[treo]

Description

A couple of libraries have made the move to async execution, using them from within Xircuits is quite cumbersome and error prone at the moment.

This introduces an AsyncComponent that can be used as the parent class which allows execute method to be defined as async.

As a bridge between sync and async we need another dependency: asgiref. It provides @sync_to_async and @async_to_sync.

Pull Request Type

• Xircuits Core (Jupyterlab Related changes)
• Xircuits Canvas (Custom RD Related changes)
• Xircuits Component Library
• Xircuits Project Template
• Testing Automation
• Documentation
• Others (Please Specify)

Type of Change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

[github-actions]

👈 Launch a binder notebook on branch XpressAI/xircuits/paul/async