[FEATURE] Allow individual / non-series books

[jacobkossman]

Is your feature request related to a problem? Please describe.
Currently if you have books that aren't in any folders (aka not part of a series) and just loose in the root they are added to a series that has the name of the main folder. I could add author folders to organize them a bit more but I don't feel like adding more folders is a good idea.

Describe the solution you'd like
Ideally it should take books that are loose in the root and make them just individual books not part of any series.

[aaronleopold]

Is the main issue having no control over the name of the auto-grouping (i.e. the defaulting to the library name), or are you more concerned/have a set preference for no grouping, at all?

I guess what I am getting at is would you find it acceptable to have control over what the name is? E.g. setting the root group (series) to be Unsorted or something.

[jacobkossman]

I think maybe having a library type that is just not series might be the best way to solve this?

but being able to change the name of the folder would be nice as well, but then it would still be mixed in with the series folders which could be messy.