Cloning Refactor and bugfixes (#35555)

* cloning refactor

* cleanup and fixes

* don't pick from 0

* give dwarves the correct species

* fix dna and bloodstream reagent data cloning

* don't copy helmets

* be less redundant

Content.Shared/Cloning/CloningEvents.cs

@@ -0,0 +1,13 @@
+namespace Content.Shared.Cloning.Events;
+
+/// <summary>
+///    Raised before a mob is cloned. Cancel to prevent cloning.
+/// </summary>
+[ByRefEvent]
+public record struct CloningAttemptEvent(CloningSettingsPrototype Settings, bool Cancelled = false);
+
+/// <summary>
+///    Raised after a new mob got spawned when cloning a humanoid.
+/// </summary>
+[ByRefEvent]
+public record struct CloningEvent(CloningSettingsPrototype Settings, EntityUid CloneUid);