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.Server/Damage/Components/IgniteOnHeatDamageComponent.cs

@@ -0,0 +1,15 @@
+using Content.Shared.Damage;
+using Content.Shared.FixedPoint;
+
+namespace Content.Server.Damage.Components;
+
+[RegisterComponent]
+public sealed partial class IgniteOnHeatDamageComponent : Component
+{
+    [DataField("fireStacks")]
+    public float FireStacks = 1f;
+
+    // The minimum amount of damage taken to apply fire stacks
+    [DataField("threshold")]
+    public FixedPoint2 Threshold = 15;
+}