Engine Entity Anchoring Changes (#4195)

* Converted all SnapGridPositionChangedEvent subscriptions to AnchorStateChangedEvent.

* Fixes power tests with new anchored requirements.

* Moved AnchorableComponent into construction.
AnchorableComponent now uses Transform.Anchored.

* Fixed bug with nodes, power works again.

* Adds lifetime stages to Component.

* Update Engine to v0.4.70.

Content.Server/Kitchen/Components/ReagentGrinderComponent.cs

@@ -68,7 +68,7 @@ namespace Content.Server.Kitchen.Components
         [ViewVariables(VVAccess.ReadWrite)] [DataField("chamberCapacity")] private int _storageCap = 16;
         [ViewVariables(VVAccess.ReadWrite)] [DataField("workTime")] private int _workTime = 3500; //3.5 seconds, completely arbitrary for now.
 
-        public override void Initialize()
+        protected override void Initialize()
         {
             base.Initialize();
             //A slot for the beaker where the grounds/juices will go.
@@ -98,7 +98,7 @@ namespace Content.Server.Kitchen.Components
             }
         }
 
-        public override void OnRemove()
+        protected override void OnRemove()
         {
             base.OnRemove();
             if (UserInterface != null)