Add grab sound effect

core/src/main/kotlin/com/last/commit/audio/GameSoundEffect.kt

@@ -14,5 +14,6 @@ public class GameSoundEffect(name: String): GameSound(name) {
         val DOOR_OPEN = GameSoundEffect("door_open.mp3")
         val DOOR_CLOSE = GameSoundEffect("door_close.mp3")
         val TIME_TRAVEL = GameSoundEffect("time_travel.mp3")
+        val GRAB = GameSoundEffect("grab.mp3")
     }
 }

core/src/main/kotlin/com/last/commit/map/Collectible.kt

@@ -1,6 +1,7 @@
 package com.last.commit.map
 
 import com.badlogic.gdx.math.Rectangle
+import com.last.commit.audio.GameSoundEffect
 import Position
 import GameState
 
@@ -21,6 +22,7 @@ class Collectible(
 
     override fun interact(otherCollider: Rectangle, state: GameState) {
         println("Interacting with item $name")
+        state.soundEngine.play(GameSoundEffect.GRAB)
         state.inventory.add(this.name)
     }