OPIK-42 Experiment compare for single supplied experiment

[andrescrz]

Details

Handing the following case from the requirements spec:

NOTE: The behavior of how this endpoint is working can depend of a number of supplied experiments ids. In case of only 1 experiment supplied probably the product team will want to show only dataset items that was used for experiment. This should be clarified with product team.

In addition, fixed a latent bug in the normal path: join by traces not getting the last trace by update date before joining with feedback scores.

Issues

OPIK-42

Testing

• Added integration test.

Documentation

• Datasets & Experiments API doc.
• Dataset Requirements doc.