feat(medcat-service): Medcat Demo and AnonCAT demo uplift in Gradio

[alhendrickson]

• feat(medcat-service): Demo page can now click annotations to view details
• feat(medcat-service): Create AnonCAT demo page
• style(medcat-service): Improve page formatting and display
• build(medcat-service): Update gradio and fastapi version
• refactor(medcat-service): Put example text into its own text files

Screenshots

Before

After

After: Anoncat demo

Split into two tabs to show details. First tab should be at least as good as existing one

[mart-r]

Overall I think this looks great!

Left a few comments on type hints for return types.

And one on the long-winded setup for the demo web interface that I think could use some refactoring for better readability and to reduce nesting.

[mart-r]

Perhaps adding the return type a type hint here would be useful? You've descried it in the docs anyway (though it's missing the last str).

I.e -> tuple[dict, list[list[str]], str]

[mart-r]

Again, including the return type (-> tuple[dict, list[list[str]]]) could be useful.

[mart-r]

Again, return type might be useful.

[mart-r]

This feels a little off to me. I suppose global state is to be expected here, but I wouldn't expect as much code to exist just within the module scope.

Both these (if / else) follow a pretty similar pattern (gr.Block -> gr.Row -> gr.Column), perhaps there's a way to simplify these to avoid some of the duplication?
But perhaps I'd just feel better if the logic (i.e the DeID mode and the regular NER+L mode) were just in their own separate methods that were called here.

The other thing to note is that there's quite a bit of nesting here (6 layers deep). Perhaps we can mitigate that a little? Perhaps we could split out some parts to separate methods?