Smooth IDE support for python_rules

# 🚀 feature request

### Description

I would like smooth editor support of the python_rules. Now when I open an editor (tried [helix](https://helix-editor.com/) and vscode) neither recognizes any of the third party imports properly breaking autocomplete and type checking.

### Describe the solution you'd like

Something like what the [rules_go people have done](https://github.com/bazelbuild/rules_go/wiki/Editor-and-tool-integration) but I imagine that pyright (the most commonly used python language server) does not have support for something similar to the gopackagedriver.. So I was thinking more along the lines of a shell script that manipulates `PATH` and `PYTHONPATH` to achieve something similar. still hacky but better than what I have now. It's also something that would work for other python language server's such as [ruff-lsp](https://github.com/astral-sh/ruff-lsp).

### Describe alternatives you've considered

Manually make a venv with the same dependencies and activate that before starting my editor. Works fine but it's hackish and it won't work for generated code. For example python files generated from protobuf by Bazel..

首先查看 issue 中链接的 rules_go 编辑器和工具集成，然后比较 pyright 和 ruff-lsp 如何发现第三方 Python 导入以及由 Bazel 生成的 Python 导入。完成标准是提供一个有文档记录且可重复的编辑器集成，支持依赖项类型检查、自动补全和生成的 protobuf 代码，而无需手动创建匹配的虚拟环境。

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