PyPI documentation on custom permission handler outdated

The permission kind values listed on https://pypi.org/project/github-copilot-sdk/#permission-handling (subsection "Permission Result Kinds") are outdated. I figured out the new ones from https://github.com/github/copilot-sdk/issues/1146, but it would be great to fix it on PyPI.
Also, adding the information on custom permission handling to https://github.com/github/awesome-copilot/blob/main/instructions/copilot-sdk-python.instructions.md would be very helpful.

首先查看 PyPI 项目页面上的 Permission Result Kinds 子节，以及 issue #1146 中关于自定义权限处理的讨论。然后检查 github/awesome-copilot 中的 instructions/copilot-sdk-python.instructions.md。当 PyPI 文档列出当前的权限值，并且说明中包含自定义权限处理指南时，即视为完成。

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