Allow commands to target offline players (#1022)

* Add targetRequirement annotation for Command

* Added MTL lines for other langs

* Fix TargetRequirement enum scoping

* Adjust commands to targetRequirement system

* Add translation message sugar to prevent future messages from being translated for wrong player

* Temporarily disable offline targeting on /permission and /clear

* Preliminary README cleanup

* Readme commands cleanup

* Clean up command table in README, including column shuffle

Co-authored-by: AnimeGitB <AnimeGitB@bigblueball.in>

src/main/java/emu/grasscutter/command/CommandHandler.java

@@ -4,6 +4,7 @@ import emu.grasscutter.Grasscutter;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.server.event.game.CommandResponseEvent;
 import emu.grasscutter.server.event.types.ServerEvent;
+import static emu.grasscutter.utils.Language.translate;
 
 import java.util.List;
 
@@ -24,6 +25,10 @@ public interface CommandHandler {
         CommandResponseEvent event = new CommandResponseEvent(ServerEvent.Type.GAME,player, message);
         event.call();
     }
+    
+    static void sendTranslatedMessage(Player player, String messageKey, Object... args) {
+        sendMessage(player, translate(player, messageKey, args));
+    }
 
     /**
      * Called when a player/console invokes a command.