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

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

Content.Shared/Body/Part/BodyPartComponentState.cs

@@ -0,0 +1,34 @@
+using Content.Shared.Body.Organ;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Body.Part;
+
+[Serializable, NetSerializable]
+public sealed class BodyPartComponentState : ComponentState
+{
+    public readonly EntityUid? Body;
+    public readonly BodyPartSlot? ParentSlot;
+    public readonly Dictionary<string, BodyPartSlot> Children;
+    public readonly Dictionary<string, OrganSlot> Organs;
+    public readonly BodyPartType PartType;
+    public readonly bool IsVital;
+    public readonly BodyPartSymmetry Symmetry;
+
+    public BodyPartComponentState(
+        EntityUid? body,
+        BodyPartSlot? parentSlot,
+        Dictionary<string, BodyPartSlot> children,
+        Dictionary<string, OrganSlot> organs,
+        BodyPartType partType,
+        bool isVital,
+        BodyPartSymmetry symmetry)
+    {
+        ParentSlot = parentSlot;
+        Children = children;
+        Organs = organs;
+        PartType = partType;
+        IsVital = isVital;
+        Symmetry = symmetry;
+        Body = body;
+    }
+}