Allow Storage Bus configurations to be copied into a Cell Workbench

[nBeebz]

Describe the feature
It should be possible to load a Storage Bus's partition config into a Cell Workbench using a Memory Card, and vice versa.

Reasons why it should be considered
A Storage Bus and a Cell Workbench have functionally identical configurations of 63 items, theoretically they should be compatible. Some interesting possibilities this would allow:

• Creating a partition for ME Drives and View Cells using any arbitrary container.
• Easily transferring the contents of a partitioned ME Drive via a Storage Bus using an I/O Port.
• Sets of items can be "abstracted away" to some external system by copying the Storage Bus's configuration into an inverted View Cell.

I think this would give View Cells and partitions a lot more utility.

[nBeebz]

Thinking about writing a PR for this @shartte, y/n?

[Technici4n]

Implemented in #6638.