Claim all for play time rewards

[Harvle]

Description of feature/improvement request:
Would simply add a claim all button / command to be able to claim all available rewards in 1 click.

Detailed explanation of what it should do, when and in what situation:
When the player uses /prewards, they will get the normal chat menu (or a GUI in the future if you ever add it), and there will be a button at the top that says "Claim All!" or something similar, and will claim all pending rewards available. Or, there could be a /prewards [playerName] claimall or /prewards claimall if the player doesn't have the cmi.command.prewards.claimall.others.

Basic explanation as to why this feature is needed and/or useful to have:
This would be helpful if a player rarely claims them and then doesn't have to click many times to claim the rewards, or spam the commandspy of the server for staff.