Data-oriented Construction System (#2152)

- Powerful
- Data-oriented
- Approved by PJB
- Powered by node graphs and AI pathfinding
- Coded by the same nerd who brought you atmos

Co-authored-by: Exp <theexp111@gmail.com>

Content.Shared/Construction/IGraphAction.cs

@@ -0,0 +1,13 @@
+#nullable enable
+using System;
+using System.Threading.Tasks;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Serialization;
+
+namespace Content.Shared.Construction
+{
+    public interface IGraphAction : IExposeData
+    {
+        Task PerformAction(IEntity entity, IEntity? user);
+    }
+}