GitLab

pyproject.toml:
Add a script setup for dbj2son pointing to `repo_management.cli:db2json`.
This can be used via `poetry run db2json`.

pyproject.toml:
Add orjson to the list of dependencies.
Add mock to the list of development dependencies.

pyproject.toml:
Add pydantic to dependencies, as it will be used to validate
configuration and internal typing.

pyproject.toml:
Add a pyproject.toml for describing the project, configuring all
currently required dependencies and development dependencies.
The configuration adds entries for the code formatter black, the import
sorting tool isort and for the coverage report generation tool coverage.