If this example implementation is available on PyPI it can more easily be used in, for example; 1. tests in other packages that build upon BMI* 2. JupyterLite notebooks (see https://github.com/csdms/bmi-python/issues/60: don't forget to publish wheels too). *in grpc4bmi we need an [extra requirements file because this gh repo cannot be refered to in the pyproject.toml file](https://github.com/eWaterCycle/grpc4bmi/blob/4671c61d1fa6242603094a4d32417923b602a90c/dev-requirements.txt).