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/UseMapleLifeHandler.java

@@ -37,18 +37,18 @@ public class UseMapleLifeHandler extends AbstractMaplePacketHandler {
         
         if(timeNow - player.getLastUsedCashItem() < 3000) {
             player.dropMessage(5, "Please wait a moment before trying again.");
-            c.announce(PacketCreator.sendMapleLifeError(3));
-            c.announce(PacketCreator.enableActions());
+            c.sendPacket(PacketCreator.sendMapleLifeError(3));
+            c.sendPacket(PacketCreator.enableActions());
             return;
         }
         player.setLastUsedCashItem(timeNow);
         
         String name = slea.readMapleAsciiString();
         if(MapleCharacter.canCreateChar(name)) {
-            c.announce(PacketCreator.sendMapleLifeCharacterInfo());
+            c.sendPacket(PacketCreator.sendMapleLifeCharacterInfo());
         } else {
-            c.announce(PacketCreator.sendMapleLifeNameError());
+            c.sendPacket(PacketCreator.sendMapleLifeNameError());
         }
-        c.announce(PacketCreator.enableActions());
+        c.sendPacket(PacketCreator.enableActions());
     }
 }