Library update feature upon startup?

I would like an option to enable the server to update the libraries (perhaps the ones of own choise) at server startup.

Why?

In our home, the plex server it not running all the time. We have a NAS for the storage, and there is often changes in between the Plex server is started.

So any new content added or old content removed is not updated when we start the Plex server, and we have to do it manually.

Hoppe this will be an option in the future.