* feat: Add pixi environment
* Add pixi manifest pixi.toml for Linux x86, macOS arm64, Windows 64.
* ci: Update CI workflow and unify to one
* Enable workflow dispatch.
* Add concurrency limits.
* Use pixi for CI workflow.
* Unify to a single workflow for all OS tested
* feat: Add pixi lock file
* Ensure tensorflow-cpu installed on Windows
* fix package check
* fix package check
* simplification plus uv and pip runners
* some fixes to pixi and pip
* create pixi.lock
* fix pixi.lock issue
* another attempt trying to fix get_packages
* another attempt trying to fix get_packages
* clean up python_environment_check.py
* updated runner and docs
* use bash
* proper env activiation
* proper env activiation
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Co-authored-by: rasbt <mail@sebastianraschka.com>
