HPOlib test

Is it possible to apply HPOlib test on many runs in a directory at once instead of specifying each run via --cwd?

Start at the HPOlib test command and its --cwd option to understand how a single run is selected. Define how a directory containing multiple runs should be discovered and processed, then verify the behavior across many runs; the repository is discontinued, so confirm that this work is still wanted before starting.

Written by the indexing model from the issue text.