Add xenos (#1204)

* Add xenos for stress test

Pretty hacky and not how I'd do it long-term

* Remove claws

* Add in unarmed combat behaviors

* Cleanuppppp

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

Content.Server/AI/Utility/Considerations/Combat/Melee/CanUnarmedCombatCon.cs

@@ -0,0 +1,17 @@
+using Content.Server.AI.Utility.Curves;
+using Content.Server.AI.WorldState;
+using Content.Server.AI.WorldState.States;
+using Content.Server.GameObjects.Components.Weapon.Melee;
+
+namespace Content.Server.AI.Utility.Considerations.Combat.Melee
+{
+    public sealed class CanUnarmedCombatCon : Consideration
+    {
+        public CanUnarmedCombatCon(IResponseCurve curve) : base(curve) {}
+
+        public override float GetScore(Blackboard context)
+        {
+            return context.GetState<SelfState>().GetValue().HasComponent<UnarmedCombatComponent>() ? 1.0f : 0.0f;
+        }
+    }
+}