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/net/server/channel/handlers/FredrickHandler.java

@@ -40,7 +40,7 @@ public class FredrickHandler extends AbstractMaplePacketHandler {
 
         switch (operation) {
             case 0x19: //Will never come...
-                //c.announce(PacketCreator.getFredrick((byte) 0x24));
+                //c.sendPacket(PacketCreator.getFredrick((byte) 0x24));
                 break;
             case 0x1A:
                 FredrickProcessor.fredrickRetrieveItems(c);