Massive varp/varbit related refactoring + new client command

Server/src/main/java/core/net/packet/out/Varbit.java

@@ -7,8 +7,14 @@ import core.net.packet.context.VarbitContext;
 public class Varbit implements OutgoingPacket<VarbitContext> {
     @Override
     public void send(VarbitContext varbitContext) {
-        IoBuffer buffer = new IoBuffer(37);
-        buffer.put((byte) varbitContext.value);
+        IoBuffer buffer;
+        if(varbitContext.value > 255){
+            buffer = new IoBuffer(84);
+            buffer.putLEInt((128 | varbitContext.value) & 255);
+        } else {
+            buffer = new IoBuffer(37);
+            buffer.put((byte) 128 | varbitContext.value);
+        }
         buffer.putLEShort(varbitContext.varbitId);
         varbitContext.getPlayer().getSession().write(buffer);
     }

Server/src/main/kotlin/rs09/game/system/command/oldsys/VisualCommand.kt

@@ -261,6 +261,15 @@ class VisualCommand : CommandPlugin() {
                 PacketRepository.send(Varbit::class.java, VarbitContext(player, value, val2))
                 return true
             }
+            "setbits" -> {
+                args ?: return false
+                val start = toInteger(args[1]!!)
+                val end = toInteger(args[2]!!)
+                val value = toInteger(args[3]!!)
+                for(i in start until end){
+                    player?.varpManager?.setVarbit(i, value)
+                }
+            }
             "loop_anim_on_i" -> {
                 var anim = toInteger(args!![1]!!)
                 ContentAPI.submitWorldPulse(object : Pulse(3){