Item count per library

[Dual-0]

Hello,

first of all, really good exporter! I use it for couple of weeks and it works great! ❤️

I would like to ask for a feature request:
It would be nice to know how much items a library has. I think every emby user has more than one library for movies.
For example I have one for movies, documentations and concerts. The metrics only shows the total amount of "movies"

Thanks in advance