Bug 28847: Move SearchLimitLibrary code to QueryBuilder Modules

Bug 28847: Move SearchLimitLibrary code to QueryBuilder Modules

This patch removes the code from the search scripts into QueryBuilder
modules.

To test:
1 - Have a library group defined as a search group for both staff and opac
2 - Search on staff client and opac with that group limit and a single branch limit
3 - Note your results/counts
4 - Note the visuals of the search description
5 - Apply patch
6 - Repeat searches
7 - All should work as before

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Joonas Kylmälä <joonas.kylmala@iki.fi>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>