feat: transform up, down, left & right properties added

Engine.Core/Abstract/ITransform2D.cs

@@ -20,6 +20,26 @@ public interface ITransform2D : IBehaviour
     /// </summary>
     Event<ITransform2D, RotationChangedArguments> OnRotationChanged { get; }
 
+    /// <summary>
+    /// The <see cref="Vector2D"/> pointing upwards in world space.
+    /// </summary>
+    Vector2D Up { get; }
+
+    /// <summary>
+    /// The <see cref="Vector2D"/> pointing upwards in world space.
+    /// </summary>
+    Vector2D Down { get; }
+
+    /// <summary>
+    /// The <see cref="Vector2D"/> pointing upwards in world space.
+    /// </summary>
+    Vector2D Left { get; }
+
+    /// <summary>
+    /// The <see cref="Vector2D"/> pointing upwards in world space.
+    /// </summary>
+    Vector2D Right { get; }
+
     /// <summary>
     /// The world position of the <see cref="ITransform2D"/> in 2D space.
     /// </summary>