Get off of our divergent bevy fork

Our particle solution is currently enabled by this work that has yet to be merged back into bevy: https://github.com/processing/bevy

We need to merge this or find a way to have this functionality without maintaining a fork ideally. We are here because we wanted to prove the functionality, but we want to move towards stability and removing this is a necessary step.

首先，追踪 libprocessing 当前如何依赖分歧的 processing/bevy fork，以及粒子功能集成在哪里。将该功能与上游 Bevy 项目进行比较，并确定是否可以在不使用该 fork 的情况下合并或替换它。在保留粒子行为的同时，不再需要维护分歧的 fork，即视为完成。