[Feature] Increase sizelimit on AD Groups in the GUI config or allow for filtering by name

[twoStickCrew]

Summary
The searcher object for AD groups has a coded limit of 2500 groups. In large AD environments the GUI doesn't populate with all AD groups.

Expected Solution
Adding a field to raise the number of groups returned or a field to allow partial name matching of the groups would make it somewhat easier to use the GUI config.

Considerations
I manually edited the JSON to include the groups required, but since I will no longer be maintianing the connector I changed the searcher code on our machine to fit our environment size.

from

    $searcher.SizeLimit = 2500
    $result = $searcher.FindAll()

to

    $searcher.Filter = '(&(objectClass=group))'
    $searcher.PageSize = 1000
    $searcher.SizeLimit = 20000