Add sound effect for LaunchpadSystem

Incorporated a sound event into the LaunchpadSystem in the SkyPvP module. Specifically, when a player is launched, the sound of a firework rocket launching now plays. This enriches the player experience, making it more immersive and interactive.

src/main/java/net/reefrealm/reefrealmskypvp/launcher/LaunchpadSystem.java

@@ -1,6 +1,7 @@
 package net.reefrealm.reefrealmskypvp.launcher;
 
 import org.bukkit.Material;
+import org.bukkit.Sound;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
@@ -15,6 +16,7 @@ public void onPlayerInteract(PlayerInteractEvent event) {
                 Player player = event.getPlayer();
                 Vector direction = player.getEyeLocation().getDirection();
                 player.setVelocity(direction.multiply(2)); // Adjust the multiplier to control the launch speed
+                player.playSound(player.getLocation(), Sound.ENTITY_FIREWORK_ROCKET_LAUNCH, 1.0f, 1.0f); // Play a sound
             }
         }
     }