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/WorldState/BlackboardManager.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using Robust.Shared.Interfaces.Reflection;
+using Robust.Shared.IoC;
+using Robust.Shared.Utility;
+
+namespace Content.Server.AI.WorldState
+{
+    // This will also handle the global blackboard at some point
+    /// <summary>
+    /// Manager the AI blackboard states
+    /// </summary>
+    public sealed class BlackboardManager
+    {
+        // Cache the known types
+        public IReadOnlyCollection<Type> AiStates => _aiStates;
+        private List<Type> _aiStates = new List<Type>();
+
+        public void Initialize()
+        {
+            var reflectionManager = IoCManager.Resolve<IReflectionManager>();
+
+            foreach (var state in reflectionManager.GetAllChildren(typeof(IAiState)))
+            {
+                _aiStates.Add(state);
+            }
+            
+            DebugTools.AssertNotNull(_aiStates);
+        }
+    }
+}