ECS and cleanup body system, merge body templates and presets into body prototypes (#11991)

Co-authored-by: Jezithyr <Jezithyr@gmail.com>

Content.Shared/Body/Components/BodyComponentState.cs

@@ -0,0 +1,18 @@
+using Content.Shared.Body.Part;
+using Robust.Shared.Audio;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Body.Components;
+
+[Serializable, NetSerializable]
+public sealed class BodyComponentState : ComponentState
+{
+    public readonly BodyPartSlot Root;
+    public readonly SoundSpecifier GibSound;
+
+    public BodyComponentState(BodyPartSlot root, SoundSpecifier gibSound)
+    {
+        Root = root;
+        GibSound = gibSound;
+    }
+}