Add mlir support in code editor

[superlopuh]

Description

Would it be possible to include syntax highlighting for MLIR? Or maybe there's a hook to provide the grammar as a dependency?

https://github.com/artagnon/tree-sitter-mlir

There's a partial implementation here, it would make our code snippets more beautiful in the notebooks.

Suggested solution

Either include "mlir" in the list of languages or add a way for users to provide their own syntax colouring.

Here's the API Textual uses to add custom languages for their TextArea class: https://textual.textualize.io/widgets/text_area/#adding-support-for-custom-languages

Alternative

No response

Additional context

No response