gd: basic weapon and readability refacto

systems/weapon/WeaponSystem.cs

@@ -0,0 +1,21 @@
+using Godot;
+
+namespace Movementtests.systems;
+
+public partial class WeaponSystem : MeshInstance3D
+{
+    private Node3D _head;
+    private ShapeCast3D _dashCast3D;
+    private Camera3D _camera;
+    private TweenQueueSystem _tweenQueueSystem;
+
+    private MantleSystem _mantleSystem;
+    private MeshInstance3D _dashTarget;
+
+    public void Init(Node3D head, Camera3D camera, TweenQueueSystem tweenQueueSystem)
+    {
+        _head = head;
+        _camera = camera;
+        _tweenQueueSystem = tweenQueueSystem;
+    }
+}