A010: Create a unified development environment with docker

[L-Moritz]

• [x] Dockerize the project
  • [x] enable hot-reload for dev environment
• [x] Add (Black)[https://black.readthedocs.io/en/stable/index.html] to format code
• [x] Document dev setup in Readme
• [x] pre-commit to protect main branch and force formatted code
• [x] simple commit-msg for uniform commit messages