/firstjointop

[DrakePork]

Description of feature/improvement request:
A command which works like /playtimetop and goes from oldest to newest. So if you do /firstjointop you get the 10 players that joined the server first.

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Detailed explanation of what it should do, when and in what situation:

When typing /firstjointop it works exactly like /playtimetop but shows join date and goes from oldest player to newest player.

Basic explanation as to why this feature is needed and/or useful to have:

This feature is useful to have to easily see when you joined compared to other players.