[feature request] Support the -F flag for inspect eval

[tw-aisi]

Currently you can use the -F flag to filter tasks when running inspect list tasks (see https://inspect.ai-safety-institute.org.uk/eval-sets.html#attributes-and-filters).

It would be nice to also support this flag on the inspect eval subcommand, so instead of having to run this:

inspect list tasks security -F light=true | xargs inspect eval-set --log-dir logs-security-42

you can run this:

inspect eval-set --log-dir logs-security-42 -F light=true

[jjallaire-aisi]

Yes, that would be so much nicer! Will try to take care of this soon.