Add utility AI (#806)

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>
Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>
Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

Content.Server/AI/Utility/Actions/IAiUtility.cs

@@ -0,0 +1,9 @@
+using Content.Server.AI.Utility.AiLogic;
+
+namespace Content.Server.AI.Utility.Actions
+{
+    public interface IAiUtility
+    {
+        float Bonus { get; }
+    }
+}