MetricQ modbus source

Current limitations

• only TCP
• only reading holding registers
• only float values
• only big endian
• only one slave per device

Configuration

See the pydantic model for a description of the configuration.

CI

• run all formatters and linters using tox as part of building the docker images
  • black
  • isort
  • mypy
  • flake8
• build docker images for all branches
• build docker images for version tags vX.Y.Z
• push docker images to ghcr.io/metricq
• No sphinx / documentation
• No upload to pypi