Add support for handling Active Directory member attribute with Range suffix

[doublemarket]

Depending on a MaxValRange setting on an Active Directory server, the server can return the member;Range=[low]-[high] (e.g. member;Range=0-1499) attribute including certain number of users instead of the member attribute including all users when a number of users in a group exceeds the MaxValRange value.

Since the filters in the lib/github/ldap/filter.rb don't care the member attribute with the Range suffix, no users can be found.

The filter should be able to handle the member attribute with the Range suffix and also it needs to support pagination if the Range suffix exists.