Allow screenshot bundling

[razzeee]

It would be useful to bundle screenshots e.g.

<picture>
	<pic>
		<image>url1_light</image>
	</pic>

	<pic>
		<image>url1_dark</image>
	</pic>

	<caption>Main screen of application</caption>
</picture>

This would be helpful in the web, to be able to create https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/picture elements according to light/dark styles used and knowing which images to show/don't show.

[ximion]

I genuinely have no idea what you mean by "bundling". Packing screenshots into the XML as base64 text?
We already do have some light (hehe) support for light/dark styles as part of the desktop environment style (e.g. plasma vs plasma:dark). The API exposes this via as_component_sort_screenshots to sort screenshots from matching envs/styles higher, as well as on the screenshot itself.

[razzeee]

Grouping light and dark (possibly other DEs too) into the same container, if they are the same view and can thus share the same caption.

The important part being, knowing which screenshots are the same, but only dark/light style.