Add Benchmark Example to Compare Performance with Pixi, Three.js, and Laya

[johanzhu]

To evaluate and showcase the performance of our engine relative to other popular frameworks, we need to create a benchmark example. This example will compare the performance of our engine with Pixi, Three.js, and Laya under similar conditions, providing insights into areas where we excel or may need improvement.

Goals:

• Develop a benchmark example that tests key performance metrics (e.g., rendering speed, memory usage, frame rate) across our engine, Pixi, Three.js, and Laya.
• Ensure that the benchmark covers typical use cases, such as handling multiple animated sprites, complex scenes, and different rendering effects.
• Provide clear performance comparisons and results that can be used for optimization or promotional purposes.