Matomo-cli

Added

- Prometheus exporter: major, minor and patch version for Matomo and PHP as metric labels

Changed

- Prometheus exporter: changed out of actions count metrics, so month and year now are labels. Example:

sh

Added

- Dockerfile for Prometheus exporter
- Link to Docker hub for docker container for the Prometheus exporter

Added

- Prometheus exporter (see README)
- More environment variables. (see README)

Changed

- Coding format.

Added

- License (GPL-3.0-or-later)

Changed

- Move api to it's own file, start to use groups in click.
- option `format` changed to `output_format`

Added

- Some colors to output

Fixed

- Shorthand options that got wrong.