Add confirmation links to commands

[andyksaw]

Issue

Currently if you ban a player (/ban <name>), it executes immediately.

Solution

It would be better if the server sent a confirmation message first: Are you sure you want to ban _____?, and provide a clickable option to actually execute the ban command.

[manningtelfer]

Rather than a clickable option, I've noticed a few plugins list commands that can be typed to e.g. "/yes, /no, /help"

[freddyheppell]

I'm not entirely sure this is necessary, banning isn't destructive as we can always unban if it was a mistake. If we do have confirmations I'd rather it was a global /yes, /no command for everywhere that requires confirmations.