Describe the workflow you want to enable

I'd like to evaluate models by "percentage of reduction in metric X", where X is:

• LogLoss
• absolute error
• pinball loss

As d2_tweedie_score #17036, these are generalizations of the r2_score.

Describe your proposed solution

Add

• d2_log_loss_score
• d2_absolute_error_score
• d2_pinball_loss_score

Describe alternatives you've considered, if relevant

No response

Additional context

See #17036 (comment).