Diona Nymphs & Splitting (#24630)

* Porting & implementation

* Fix two stupid errors

* Human not humans

* fix audio path

* Fix test fails & update cooldown

* Work on reviews & test fail

* Rework nymph organ system.

* Make the nymph organs nospawn.

* IsDeadIC

Content.Shared/Mind/IsDeadICSystem.cs

@@ -0,0 +1,21 @@
+using Content.Shared.Mind.Components;
+
+namespace Content.Shared.Mind;
+
+/// <summary>
+/// This marks any entity with the component as dead
+/// for stuff like objectives & round-end
+/// used for nymphs & reformed diona.
+/// </summary>
+public sealed class IsDeadICSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<IsDeadICComponent, GetCharactedDeadIcEvent>(OnGetDeadIC);
+    }
+
+    private void OnGetDeadIC(EntityUid uid, IsDeadICComponent component, ref GetCharactedDeadIcEvent args)
+    {
+        args.Dead = true;
+    }
+}