feature: Typst Equation Preview

[stefanboca]

Did you check the docs?

• [x] I have read all the snacks.nvim docs

Is your feature request related to a problem? Please describe.

Recently, inline equation rendering for latex was added using pdflatex and tectonic. I'd appreciate it if you could also implement the same for typst equations.

Describe the solution you'd like

Typst equations are rendered using the typst compile command then displayed, similarly to latex equations.

Describe alternatives you've considered

Don't display inline typst equations.

Additional context

A simple typst template might look like

#set page(width: auto, height: auto, margin: (x: 2pt, y: 2pt))
#set text(size: 12pt, fill: rgb("#FF0000"))
$ 5 + 5 = 10 $

and can be rendered directly to png with the command typst compile --format png my_typst_file.typ. The above example renders to