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/BodyComponent.cs

@@ -0,0 +1,36 @@
+using Content.Shared.Body.Part;
+using Content.Shared.Body.Prototypes;
+using Content.Shared.Body.Systems;
+using Content.Shared.DragDrop;
+using Robust.Shared.Audio;
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+
+namespace Content.Shared.Body.Components;
+
+[RegisterComponent, NetworkedComponent]
+[Access(typeof(SharedBodySystem))]
+public sealed class BodyComponent : Component, IDraggable
+{
+    [ViewVariables]
+    [DataField("prototype", customTypeSerializer: typeof(PrototypeIdSerializer<BodyPrototype>))]
+    public readonly string? Prototype;
+
+    [ViewVariables]
+    [DataField("root")]
+    public BodyPartSlot Root = default!;
+
+    [ViewVariables]
+    [DataField("gibSound")]
+    public SoundSpecifier GibSound = new SoundCollectionSpecifier("gib");
+
+    bool IDraggable.CanStartDrag(StartDragDropEvent args)
+    {
+        return true;
+    }
+
+    bool IDraggable.CanDrop(CanDropEvent args)
+    {
+        return true;
+    }
+}