Allow per-player i18n for command help

[XHawk87]

Description

I'd like to be able to supply help messages to users for commands in the user's preferred language.

Expected code

new CommandAPICommand("blah")
  .withHelp(makeHelpTopic("blah"))
  .executes( ... )
  .register();

public HelpTopic makeHelpTopic(String commandName) {
  return new HelpTopic() {
    @Override
    public String getFullText(@NotNull CommandSender forWho) {
      // Something something i18n
    }
  }
}

This would be an alternative to .withHelp(String shortDescription, String fullDescription)

Extra details

No response