Include item count for libraries and folders in title on listing screens

At the top of every library or folder there is its name, and beneath is the listing of items, either as a list or poster view; for example, for a “Movies” library it will say “Movies.” I’d like to know how many items are in the listing as well. This would then make the title read “Movies (nnnn)” instead. After a while, any collector tends to keep a fuzzy estimate of their different collections, and it would help signal that new items were added successfully, or that some items’ metadata were incorrect so they’re not appearing when they should.