Respect PsReadline's HistoryNoDuplicates setting

[stinos]

If a user has chosen to ignore duplicates in the Psreadline history, apply this to the history shown by Invoke-FzfPsReadlineHandlerHistory as well for consistency since it will usually used in place of the original PsReadLine hisotroy search. Note that PsReadLine ignores duplicates in code, not in the file it saves, so we must do the same by filtering duplicates from the file.

Note I replaces some spaces with tabs in this function to keep things readable.

[kelleyma49]

Thank you for change!

[stinos]

You're welcome, I really like PSFzf.