[#34] Better Notification System (#35)

* [#34] Implement new notification system with tests

* [#34] Update demo to use new notification system

* [#34] Add deprecation text to old notification system

* [#34] Improve javadocs and rename builder implementation

* [#34] Improve javadocs and fix tests

* [#34] Remove empty lines

* [#34] Add package description

Author: TheMeinerLP

demo/src/main/java/net/minestom/demo/PlayerInit.java

@@ -5,8 +5,6 @@
 import net.minestom.server.FeatureFlag;
 import net.minestom.server.MinecraftServer;
 import net.minestom.server.advancements.FrameType;
-import net.minestom.server.advancements.notifications.Notification;
-import net.minestom.server.advancements.notifications.NotificationCenter;
 import net.minestom.server.adventure.MinestomAdventure;
 import net.minestom.server.adventure.audience.Audiences;
 import net.minestom.server.coordinate.Pos;
@@ -24,7 +22,15 @@
 import net.minestom.server.event.entity.EntityAttackEvent;
 import net.minestom.server.event.item.ItemDropEvent;
 import net.minestom.server.event.item.PickupItemEvent;
-import net.minestom.server.event.player.*;
+import net.minestom.server.event.player.AsyncPlayerConfigurationEvent;
+import net.minestom.server.event.player.PlayerBlockInteractEvent;
+import net.minestom.server.event.player.PlayerBlockPlaceEvent;
+import net.minestom.server.event.player.PlayerDeathEvent;
+import net.minestom.server.event.player.PlayerDisconnectEvent;
+import net.minestom.server.event.player.PlayerPacketEvent;
+import net.minestom.server.event.player.PlayerPacketOutEvent;
+import net.minestom.server.event.player.PlayerSpawnEvent;
+import net.minestom.server.event.player.PlayerUseItemOnBlockEvent;
 import net.minestom.server.event.server.ServerTickMonitorEvent;
 import net.minestom.server.instance.Instance;
 import net.minestom.server.instance.InstanceContainer;
@@ -50,6 +56,7 @@
 import net.minestom.server.potion.CustomPotionEffect;
 import net.minestom.server.potion.PotionEffect;
 import net.minestom.server.sound.SoundEvent;
+import net.minestom.server.notifications.Notification;
 import net.minestom.server.utils.MathUtils;
 import net.minestom.server.utils.NamespaceID;
 import net.minestom.server.utils.time.TimeUnit;
@@ -183,13 +190,11 @@ class A {
 
 
                 if (event.isFirstSpawn()) {
-                    Notification notification = new Notification(
-                            Component.text("Welcome!"),
-                            FrameType.TASK,
-                            Material.IRON_SWORD
-                    );
-                    NotificationCenter.send(notification, event.getPlayer());
-
+                    Notification notification = Notification.builder()
+                            .frameType(FrameType.TASK)
+                            .title(Component.text("Welcome!"))
+                            .icon(Material.IRON_SWORD).build();
+                    notification.send(player);
                     player.playSound(Sound.sound(SoundEvent.ENTITY_EXPERIENCE_ORB_PICKUP, Sound.Source.PLAYER, 0.5f, 1f));
                 }
             })