Python: [Bug]: Inconsistent folder naming in Python samples (hyphens vs underscores)

### Description

Some folders within the Python samples use hyphens ("-") while others use underscores ("_"). To improve clarity and maintain best practices, folder names should use a single naming convention consistently—preferably underscores, following standard Python guidelines.

### Code Sample

```markdown

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### Error Messages / Stack Traces

```markdown

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### Package Versions

agent-framework

### Python Version

_No response_

### Additional Context

Suggest updating all Python sample folder names to use underscores ("_") for consistency and Python import compatibility. If agreed, update documentation and example import statements accordingly.