feat(skore-hub-project): Compute and send `skrub` table reports

[thomass-dev]

In prevision of #1885, when sending an estimator report from lib to hub:

• compute skrub table reports (train/test) using .data accessor with with_y=True,
• send the corresponding objects using their JSON HTML representation.

The naming has to be defined with @rouk. Should it be a metric, metadata etc?