Methods FromName() and TryFromName() for SmartFlagEnum do not work with ignore case at true

With the example of EmployeeType in documentation, when using .FromName (ou .TryFromName) with the ignore case flag, no value is returned.

`IEnumerable types = EmployeeType.FromName("director, manager", true);`

The issue is due to the method TryGetFlagEnumValuesByName in SmartFlagEnumExtensions: The BinarySearch on the array should use a System.Collections.CaseInsensitiveComparer as third parameter in this scenario.

Start with TryGetFlagEnumValuesByName in SmartFlagEnumExtensions and reproduce the EmployeeType.FromName("director, manager", true) example from the documentation. Check the case-insensitive lookup path and verify that both FromName and TryFromName return the expected values when ignore case is true.

Written by the indexing model from the issue text.