this is quite basic, uses a snapshot style history instead of a command-style storage, where we could store forward/reverse callbacks.
as a result, this can presently only be used for storing and loading full snapshots. you cannot undo favourites/ratings with this model.
to improve this, i would probably update this down the line to make each item of the undostack store a:
{forwardOp, reverseOp}
and the queue snapshotting logic can be augmented to simply be:
{() => {return newState;}, () => {return oldState;}}
Signed-off-by: oppiliappan me@oppi.li