Fix WebSocket import error for Python 3.12 compatibility

[philipdp123]

This pull request addresses an issue encountered specifically in Python 3.12 related to importing the WebSocket extension in Bottle applications. The error arises due to the absence of the bottle.ext.websocket

Additionally I added tox configurations for Python 3.11 and Python 3.12

This PR should also resolve the following issues: #723

[philipdp123]

The solution should also be backwards compatible with other supported versions of python

[selltool]

It verry good

[philipdp123]

@samuelhwilliams Can you please have a look at pulling this in for 3.12 support

[samuelhwilliams]

Thanks for the nudge and sorry for the delay. This looks good - will merge.

[philipdp123]

Thanks Samuel!