Hook the native_numbering extension into Typst

[sjml]

By default, Typst numbers all figures, including tables. There's no way to disable this globally, as far as I can tell; you have to set numbering: none on each figure as you create it.

I know that the odt, docx, and opendocument writers support a native_numbering extension that can be enabled/disabled. Would it be reasonable to hook the Typst writer into that, too, at have it emit the disabling markup if the extension is turned off?

I don't think this could be done with a Lua filter, since it's not modifying Pandoc's AST, but the writer... but maybe there's some clever use of attributes that could get around it?

[sjml]

I'm finding it is possible to remove numberings by redefining the caption function:

	show figure.caption: it => [
		#text(it.body)
	]

So maybe this is (a) not needed or (b) if not [a], could go in the template instead of the writer.

[jgm]

I think that we should let typst do the numbering by default, since what's what we have in LaTeX. Changing the template this way would mean that there was never any numbering. But it's good to know you can do something simple like this to disable numbering globally if you want to.

[sjml]

Oh, yes, to be clear, I was not advocating to change the default. Just thinking to add a handle to control it.

[jgm]

I'm inclined to say that things are okay as they stand, as it's not too complicated to do what you did.