Add permission for tpsbar/compass/etc only for self

[lululombard]

Hey there!

I really like the TPSBar and other features offered by Purpur and I'd like to give it access to some of our players.

Unfortunately, there is only one permission node, bukkit.command.tpsbar, which allows toggling the bar for other players, so I can't give it to players or they might try toggling the bar of other players.

My suggestion is to add a bukkit.command.tpsbar.others permission that allows specifying a player, with the original permission only allowing to toggle it for the current player.

What do you think about this? Thank you!

[lululombard]

Nevermind this is a duplicate of #959