chore: AABB ToString() Method

Engine.Physics2D/Primitives/AABB.cs

@@ -65,6 +65,12 @@ public readonly struct AABB(Vector2D lowerBoundary, Vector2D upperBoundary)
         return new(lowerBoundary, upperBoundary);
     }
 
+    /// <summary>
+    /// Converts the <see cref="AABB"/> to its string representation.
+    /// </summary>
+    /// <returns>A string representation of the <see cref="AABB"/>.</returns>
+    public override string ToString() => $"{nameof(AABB)}({LowerBoundary}, {UpperBoundary})";
+
     /// <summary>
     /// Checks if two <see cref="AABB"/>s are approximately equal.
     /// </summary>