uncloak ninja after attacking (#20892)

* raise MeleeAttackEvent on the user after swinging

* add disable bool to RevealNinja

* uncloak ninja after attacking

---------

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Shared/Weapons/Melee/Events/MeleeAttackEvent.cs

@@ -0,0 +1,7 @@
+namespace Content.Shared.Weapons.Melee.Events;
+
+/// <summary>
+/// Event raised on the user after attacking with a melee weapon, regardless of whether it hit anything.
+/// </summary>
+[ByRefEvent]
+public record struct MeleeAttackEvent(EntityUid Weapon);

Content.Shared/Weapons/Melee/SharedMeleeWeaponSystem.cs

@@ -426,6 +426,9 @@ public abstract class SharedMeleeWeaponSystem : EntitySystem
             DoLungeAnimation(user, weapon.Angle, GetCoordinates(attack.Coordinates).ToMap(EntityManager, TransformSystem), weapon.Range, animation);
         }
 
+        var attackEv = new MeleeAttackEvent(weaponUid);
+        RaiseLocalEvent(user, ref attackEv);
+
         weapon.Attacking = true;
         return true;
     }