Create environment.yml for easier installation

Perhaps create an environment.yml file for easier installation, e.g. conda env create -f environment.yml

name: micadowise
channels:
  - conda-forge
  - defaults
dependencies:
  - python>=3.8
  - pip>=20
  - numpy>=1.19
  - pip:
     - pytest-flake8
#     - -r file:requirements.txt

• Also add black as a dependency.
• Learn and describe how to upgrade this environment
• Need ipykernel and pytest as dependency?
• How to deal with cxOracle and instant client? Separate environment.withdatabase.yml or so?