Plays rustle sound when inserting or opening a backpack. (#2890)

* SoundCollection

* Works

* Applied review

* Waah

* Working

* e

* Adjust sound collection serialization

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Server/GameObjects/Components/Interactable/ToolComponent.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Content.Server.GameObjects.EntitySystems.DoAfter;