Finish refactoring tools. Add multitools. (as in multiple tools in one)

Content.Shared/GameObjects/Components/Interactable/SharedToolComponent.cs

@@ -0,0 +1,46 @@
+using System;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Interactable
+{
+    public enum Tool : byte
+    {
+        Wrench,
+        Crowbar,
+        Screwdriver,
+        Wirecutter,
+        Welder,
+        Multitool,
+    }
+
+    public class SharedToolComponent : Component
+    {
+        public override string Name => "Tool";
+        public override uint? NetID => ContentNetIDs.TOOL;
+
+        public virtual Tool Behavior { get; set; }
+    }
+
+    [NetSerializable, Serializable]
+    public class ToolComponentState : ComponentState
+    {
+        public float FuelCapacity { get; }
+        public float Fuel { get; }
+        public bool Activated { get; }
+        public Tool Behavior { get; }
+
+        public ToolComponentState(Tool behavior) : base(ContentNetIDs.TOOL)
+        {
+            Behavior = behavior;
+        }
+
+        public ToolComponentState(float fuelCapacity, float fuel, bool activated) : base(ContentNetIDs.TOOL)
+        {
+            FuelCapacity = fuelCapacity;
+            Fuel = fuel;
+            Activated = activated;
+            Behavior = Tool.Welder;
+        }
+    }
+}