NodeGroup remake deferment (#1268)

* Remove Unnecessary AnchorUpdate() call

* NodeGroupManager

* NodeGroupManager issues NodeGroup remake attempts

* Code cleanup

* NodeGroupManager only stores dirty groups, handles them on next frame

* Removes unused NodeGroupManager dependency

* Prevents OnRemoveNode from iterating over every connector after the first time

* Revert "Prevents OnRemoveNode from iterating over every connector after the first time"

This reverts commit c72af4b18d55192af789514f74bef893cf076fbc.

* Dependancy warning fix

Co-authored-by: py01 <pyronetics01@gmail.com>

Content.Server/GameObjects/EntitySystems/NodeGroupSystem.cs

@@ -0,0 +1,19 @@
+using Content.Server.GameObjects.Components.NodeContainer.NodeGroups;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.IoC;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    public class NodeGroupSystem : EntitySystem
+    {
+#pragma warning disable 649
+        [Dependency] private readonly INodeGroupManager _groupManager;
+#pragma warning restore 649
+
+        public override void Update(float frameTime)
+        {
+            base.Update(frameTime);
+            _groupManager.Update(frameTime);
+        }
+    }
+}