Implement a benchmark for Delaunay2D (#38)

benchmarks/math/delaunay_2d.gd

@@ -0,0 +1,26 @@
+extends Benchmark
+
+const NUM_POINTS := 7_000
+const UPPER_LEFT := Vector2(0.0, 0.0)
+const BOTTOM_RIGHT := Vector2(10.0, 10.0)
+
+var rng := RandomNumberGenerator.new()
+
+func scatter_points(num_points: int,
+					upper_left: Vector2,
+					bottom_right: Vector2) -> PackedVector2Array:
+	rng.seed = hash("Delaunay2D")
+	var points := PackedVector2Array()
+
+	for i in range(num_points):
+		points.append(Vector2(
+			rng.randf_range(upper_left.x, bottom_right.x),
+			rng.randf_range(upper_left.y, bottom_right.y)
+		))
+
+	return points
+
+var scattered_points := scatter_points(NUM_POINTS, UPPER_LEFT, BOTTOM_RIGHT)
+
+func benchmark_delaunay2D() -> void:
+	Geometry2D.triangulate_delaunay(scattered_points)