Add HTML Renderer

[gjmooney]

Describe your changes
Adds an HTML renderer. Users can input HTML strings as the value of the cell and the output will be rendered HTML.

Testing performed
Manual testing and added visual regression tests

[gjmooney]

Bot update galata references

[paddymul]

Out of curiosity, how do you think about security with allowing users to input raw HTML? Are you thinking about any type of disclaimers?

[martinRenou]

Bot update galata references

The bot does not seem obedient https://github.com/bloomberg/ipydatagrid/actions/runs/8204278156/job/22438628744 ...

Out of curiosity, how do you think about security with allowing users to input raw HTML? Are you thinking about any type of disclaimers?

I guess it would be fair to say that we are not far from the HTML widget situation in ipywidgets. Users can technically already output any HTML they want in the Jupyter notebook. I can also think of the IPython.display HTML output.

[martinRenou]

This all looks great! Thanks!

I see one tiny issue, when resizing the column that contains HTML, the HTML content stretches or shrinks weirdly:

Screencast.from.2024-03-20.15-45-51.webm

I suppose that because your HTML content depends entirely on the cell size, we should invalidate the cache as soon as the cell is not the same size. Right now your cache depends only on the cell content, not the cell size.

I'm not sure making the cache dependent on the cell size is the way to go though. Probably let's not cache anything at all?

[martinRenou]

Thanks!!