python gazelle: ignore "binaries" when generating py_librarys

# 🚀 feature request

### Relevant Rules

- rules_python

### Description

A clear and concise description of the problem or missing capability...

Add a config for python gazelle module to ignore "binary" files from the`srcs` of the `py_library` generated code.

By "binary" file I mean the logic that gazelle uses to define what src is used by a generated `py_binary`

### Describe the solution you'd like

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### Describe alternatives you've considered

Have you considered any alternative solutions or workarounds?