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/commands/GiveCommand.java

@@ -33,10 +33,6 @@ public final class GiveCommand implements CommandHandler {
 
     @Override
     public void execute(Player sender, Player targetPlayer, List<String> args) {
-        if (targetPlayer == null) {
-            CommandHandler.sendMessage(sender, translate(sender, "commands.execution.need_target"));
-            return;
-        }
         int item;
         int lvl = 1;
         int amount = 1;