All packet creating methods now create Packet instead of byte[]

This commit got way too big...
- Remove deprecated methods for sending packets
- Favor OutPacket & Packet over MaplePacketLittleEndianWriter, LittleEndianWriter, and byte array
- Split up some packet creating methods into separate classes

src/main/java/server/partyquest/MonsterCarnivalParty.java

@@ -112,7 +112,7 @@ public class MonsterCarnivalParty {
         final String effect = winner ? "quest/carnival/win" : "quest/carnival/lose";
 
         for (final MapleCharacter chr : members) {
-            chr.announce(PacketCreator.showEffect(effect));
+            chr.sendPacket(PacketCreator.showEffect(effect));
         }
     }