Muzzle flash enhancements (#9527)

Content.Shared/Weapons/Ranged/Events/MuzzleFlashEvent.cs

@@ -0,0 +1,17 @@
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Weapons.Ranged.Events;
+
+/// <summary>
+/// Raised whenever a muzzle flash client-side entity needs to be spawned.
+/// </summary>
+[Serializable, NetSerializable]
+public sealed class MuzzleFlashEvent : EntityEventArgs
+{
+    public string Prototype;
+
+    public MuzzleFlashEvent(string prototype)
+    {
+        Prototype = prototype;
+    }
+}