Stamina damage (#9230)

Content.Server/Damage/Events/StaminaDamageOnHitAttemptEvent.cs

@@ -0,0 +1,10 @@
+namespace Content.Server.Damage.Events;
+
+/// <summary>
+/// Attempting to apply stamina damage on a melee hit to an entity.
+/// </summary>
+[ByRefEvent]
+public struct StaminaDamageOnHitAttemptEvent
+{
+    public bool Cancelled;
+}