[RFC] Run Chipmunkphp on multiple platforms

Right now the Linux `.so` library is hardcoded in the `Environment` class.

Would be nice to test the wrapper on different platforms and architectures. Right now I'm working on Ubuntu 20.04 x86_64.

We should ellaborate a list of wanted platforms to run Chipmunkphp. Also I would be very open to a different strategy to the Environment singleton (🤮) that wouldn't imply to inject the environment to each and every wrapper class.

首先检查 Environment 类和 Linux .so 参考，然后跟踪 wrapper 类如何使用环境。审查当前的 Ubuntu 20.04 x86_64 设置，并确定要支持的平台和架构。完成的标准是就目标平台列表以及在不依赖当前硬编码假设的情况下测试 wrapper 的策略达成一致。

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