NPC refactor (#10122)

Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Content.Server/NPC/HTN/PrimitiveTasks/Operators/PickRandomRotationOperator.cs

@@ -0,0 +1,21 @@
+using System.Threading.Tasks;
+using Robust.Shared.Random;
+
+namespace Content.Server.NPC.HTN.PrimitiveTasks.Operators;
+
+public sealed class PickRandomRotationOperator : HTNOperator
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    [ViewVariables, DataField("targetKey")]
+    public string TargetKey = "RotateTarget";
+
+    public override async Task<(bool Valid, Dictionary<string, object>? Effects)> Plan(NPCBlackboard blackboard)
+    {
+        var rotation = _random.NextAngle();
+        return (true, new Dictionary<string, object>()
+        {
+            {TargetKey, rotation}
+        });
+    }
+}