[Request] Add tab completion for commands

[animeavi]

Idea

I think it would be nice to have tab completion for commands.

Details

Commands should have relevant tab completion. For example: whenever the player types something like /f invite it would be nice to get a list of online players in the server in front of the command.

Additional info

One of my players has a name with a space (cracked client) and that makes it impossible to use Factions commands on him at the moment, I'm not sure if this would solve that issue or it needs to be a separate bug.

[CmdrKittens]

One of my players has a name with a space (cracked client) and that makes it impossible to use Factions commands on him at the moment, I'm not sure if this would solve that issue or it needs to be a separate bug.

Tab completion though? Sounds fun.

[animeavi]

I do think plugin commands that get native tab completion can handle names with space somehow but not sure how it happens.

[drtshock]

We can add tab completion to commands, yes. Not going to worry about your cracked client use case.