[Feature Request]: add KaTeX in Dynamic editing mode

[dmew]

Is your feature request related to a problem? Please describe.
I really like the Dynamic editing mode, but it doesn't support KaTeX.

Describe the solution you'd like
LaTeX equations renderred in the Dynamic editing mode.

Describe alternatives you've considered
Maybe it is possible to use KaTeX library on top of Rich Markdown Editor to render equations in it's output?

Thank you for developing awesome SN editors!

[dmew]

Here is a proof-of-concept of KaTeX integration in Rich Markdown Editor using prosemirror-math:

• feat: Math / KaTeX outline/rich-markdown-editor#434