Is there an existing issue for this?

• There is no existing issue for this feature

What are you currently unable to do

Currently incus-migrate can be used to create a remote instance on Incus based on either a filesystem tree (container) or a disk or image file (VM).

We should also allow for streaming into a custom volume instead, with the same logic, so a filesystem tree would land into a filesystem storage volume and a disk or image file would end up in a block storage volume.

The APIs are near identical for instances and custom volumes, so this should be pretty easy to add to the tool.

What do you think would need to be added

No response