Add Span option for multi-monitor wallpaper

[PeterBeckley]

Describe the enhancement or feature you'd like
"Span" is an option in Windows 11 that allows a single wallpaper image to span across multiple monitors as opposed to displaying the image duplicated to each monitor. This allows for ultra wide wallpapers. It would be great to have this option in this app as well as one of the options in: Personalization -> Wallpaper -> Choose a fit for your desktop image.

Describe alternatives you've considered
I don't know of an alternative way of doing this

[Spiritreader]

Most likely will not be added as for that purpose we are using the official multi monitor wallpaper API provided by windows.

I would recommend that you try this:
Split your wallpaper into two different ones, each with the section that you want displayed the target monitor.
Then use the "Picture -> Multiple Monitors" feature to set them for each monitor respectively.

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Alternatively, if you don't want to do that for whatever reason, you can use the theme feature

to apply a fully custom theme that only you can and are expected to maintain.

I've tried adding the span option, but it caused problems in the past which I don't see viable to resolve as the proposed alternative with multi mon wallpapers covers your use case, and the 2nd altnerative completely absolves ADM of any responsibility when it comes to setting (officially supported!) theme options.