Detect Test Environment

The `lib-detect-testenv` library provides utility functions to programmatically detect whether Python code is currently running within a test environment. It supports detection of `pytest`, `doctest` (including PyCharm's docrunner), and `setup.py test` execution contexts. The library also offers a Command Line Interface (CLI) for integration into shell scripts and CI/CD pipelines. The current version is 3.0.1, last released on December 15, 2025, indicating active maintenance.