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/CharInfoRequestHandler.java

@@ -42,7 +42,7 @@ public final class CharInfoRequestHandler extends AbstractMaplePacketHandler {
                 if(c.getPlayer().getId() != player.getId()) {
                     player.exportExcludedItems(c);
                 }
-                c.announce(PacketCreator.charInfo(player));
+                c.sendPacket(PacketCreator.charInfo(player));
             }
         }
     }