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/ToolConstructionGraphStep.cs

@@ -0,0 +1,35 @@
+using System;
+using Content.Shared.GameObjects.Components.Interactable;
+using Robust.Shared.Localization;
+using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
+
+namespace Content.Shared.Construction
+{
+    public class ToolConstructionGraphStep : ConstructionGraphStep
+    {
+        public ToolQuality Tool { get; private set; }
+        public float Fuel { get; private set; }
+        public string ExamineOverride { get; private set; }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(this, x => x.Tool, "tool", ToolQuality.None);
+            serializer.DataField(this, x => x.Fuel, "fuel", 10f); // Default fuel cost.
+            serializer.DataField(this, x => x.ExamineOverride, "examine", string.Empty);
+        }
+
+        public override void DoExamine(FormattedMessage message, bool inDetailsRange)
+        {
+            if (!string.IsNullOrEmpty(ExamineOverride))
+            {
+                message.AddMarkup(Loc.GetString(ExamineOverride));
+                return;
+            }
+
+            message.AddMarkup(Loc.GetString($"Next, use a [color=cyan]{Tool.GetToolName()}[/color]."));
+        }
+    }
+}