Start refactoring tools

Content.Server/GameObjects/EntitySystems/ToolSystem.cs

@@ -0,0 +1,21 @@
+using System.Collections.Generic;
+using Content.Server.GameObjects.Components.Interactable;
+using Content.Server.GameObjects.Components.Interactable.Tools;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Systems;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    /// <summary>
+    ///     Despite the name, it's only really used for the welder logic in tools. Go figure.
+    /// </summary>
+    public class ToolSystem : EntitySystem
+    {
+        private readonly HashSet<ToolComponent> _activeWelders = new HashSet<ToolComponent>();
+
+        public override void Update(float frameTime)
+        {
+            foreach (var tool in _activeWelders) ;
+        }
+    }
+}