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/OpenFamilyHandler.java

@@ -35,7 +35,7 @@ public final class OpenFamilyHandler extends AbstractMaplePacketHandler {
     public final void handlePacket(SeekableLittleEndianAccessor slea, MapleClient c) {
         if(!YamlConfig.config.server.USE_FAMILY_SYSTEM) return;
         MapleCharacter chr = c.getPlayer();
-        c.announce(PacketCreator.getFamilyInfo(chr.getFamilyEntry()));
+        c.sendPacket(PacketCreator.getFamilyInfo(chr.getFamilyEntry()));
     }
 }