Add support for age ratings

[Killercollins08]

Plex has settings for age ratings based on IMDB age ratings for different media you add to your server over there and you can filter out what you don't want a profile to see based on a certain age range. It would be really awesome if audiobookshelf had this same thing. As of right now, my server for audio books is a little too organized to have everything split up based on three age ranges and I give access to those three different sections based on rough ages to those that have access to my server (I have separate folder paths on my server for different rough ages and give access to those paths based on the user's age group. I.E. Adults have access to everything, older kids have access to the lower two age folders, small children can only access the lower end folder). It's a very tedious and time consuming process that could be very much streamlined If I could set a one time setting and just forget it and just be able to willy nilly add titles to my server and not have to worry about how I catagorize everything. I feel like I have to actually organize it like a real in person library. I went a few years back in this Ideas thread and did not find anything about something like this, so I'm sorry if this is already something that has been mentioned. If it has, maybe it could be brought up again now.

[Vito0912]

You could use tags for this already.
You would add a tags for each age you want (e.g. 12, 14, 16 etc.) and assign the book the tag it is for (e.g. 14). Your users then get restricted only to view tags under/their age. Then you would only need to assign one tag to a book as you would need to do with a dedicated field anyways (as there is no source that returns that data afaik - please correct if I am wrong here).