Wrap around hpDec schedules (#75)

* Wrap around hpDec schedules

Merges hpDec schedules at character into a world schedule.

* Patch hpDec timer reset on changing maps

Patch timer reset on changing maps with hpDec.

* Update Character.java

* Update Client.java

* Update World.java

Co-authored-by: Ronan Lana <rcpl2010@gmail.com>

src/main/java/client/Client.java

@@ -940,6 +940,10 @@ public class Client extends ChannelInboundHandlerAdapter {
                 if (MapId.isDojo(mapId)) {
                     this.getChannelServer().freeDojoSectionIfEmpty(mapId);
                 }
+                
+                if (player.getMap().getHPDec() > 0) {
+                    getWorldServer().removePlayerHpDecrease(player);
+                }
             }
 
         } catch (final Throwable t) {