[Suggestion] Refined Storage Bridge "getUsedItemDiskStorage"/"getUsedFluidDiskStorage"

[fishermedders]

Describe your idea

This function would expose the amount of storage actually used in the Refined Storage Network. This also seems like a no-brainer because there are already the "getMaxItemDiskStorage" and "getMaxFluidDiskStorage" methods.

Perhaps there could also be a "getDisks" method that would return a table of disks with their total and used storage with some sort of unique identifier or uuid (I'm sure internally RS drives have some sort of uuid or uuid-like identifier).

The "getDisks" suggestion would be a QOL type thing, although it wouldn't make or break. The "getMaxItemDiskStorage" and "getMaxFluidDiskStorage" suggestions, on the other hand, seem like they should already be there though.

Describe alternatives you've considered if you've any

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Additional context

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Linked Issues

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