Move Anchorable to shared. (#7361)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Shared/Construction/EntitySystems/SharedAnchorableSystem.cs

@@ -0,0 +1,40 @@
+using System.Threading.Tasks;
+using Content.Shared.Construction.Components;
+using Content.Shared.Interaction;
+using Content.Shared.Pulling.Components;
+using Content.Shared.Tools.Components;
+
+namespace Content.Shared.Construction.EntitySystems;
+
+public abstract class SharedAnchorableSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<AnchorableComponent, InteractUsingEvent>(OnInteractUsing, after: new[] { typeof(SharedConstructionSystem) });
+    }
+
+    private async void OnInteractUsing(EntityUid uid, AnchorableComponent anchorable, InteractUsingEvent args)
+    {
+        if (args.Handled)
+            return;
+
+        // If the used entity doesn't have a tool, return early.
+        if (!TryComp(args.Used, out ToolComponent? usedTool) || !usedTool.Qualities.Contains(anchorable.Tool))
+            return;
+
+        args.Handled = true;
+        await TryToggleAnchor(uid, args.User, args.Used, anchorable, usingTool: usedTool);
+    }
+
+    public virtual async Task<bool> TryToggleAnchor(EntityUid uid, EntityUid userUid, EntityUid usingUid,
+        AnchorableComponent? anchorable = null,
+        TransformComponent? transform = null,
+        SharedPullableComponent? pullable = null,
+        ToolComponent? usingTool = null)
+    {
+        // Thanks tool system.
+        return false;
+    }
+}