Convert suicide to ecs (#8091)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Interaction/Events/SuicideEvent.cs

@@ -0,0 +1,39 @@
+namespace Content.Shared.Interaction.Events
+{
+    /// <summary>
+    ///     Raised Directed at an entity to check whether they will handle the suicide.
+    /// </summary>
+    public sealed class SuicideEvent : EntityEventArgs
+    {
+        public SuicideEvent(EntityUid victim)
+        {
+            Victim = victim;
+        }
+        public void SetHandled(SuicideKind kind)
+        {
+            if (Handled) throw new InvalidOperationException("Suicide was already handled");
+            Kind = kind;
+        }
+        
+        public SuicideKind? Kind { get; private set; }
+        public EntityUid Victim { get; private set; }
+        public bool Handled => Kind != null;
+    }
+
+    public enum SuicideKind
+    {
+        Special, //Doesn't damage the mob, used for "weird" suicides like gibbing
+
+        //Damage type suicides
+        Blunt,
+        Slash,
+        Piercing,
+        Heat,
+        Shock,
+        Cold,
+        Poison,
+        Radiation,
+        Asphyxiation,
+        Bloodloss
+    }
+}