Required information

• Incus version: 6.1

Request description

Followup to https://discuss.linuxcontainers.org/t/how-to-use-incus-simplestreams-with-images-published-from-containers/19947/4

A user wanted to export container/images in split format to be able to use the files directly with a simplestreams server.

Distrobuilder supports the following:

    following values:

        - split (default)
        - unified

I assume something similar could be added here as well.

In addition also the compression method could be changeable, but that is a different request.