Feature/print

[corentincarton]

Description

Allows to print a snapshot of the suite on the command line, such as:

It can also generate nice markdown compatible output, which can then be used to show the suite summary in GitHub Actions (for instance), see https://github.com/ecmwf/anemoi-docs/actions/runs/16193528141

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.