Realign model and analys settings schema with actual options for correlation settings

[fl-ndaq]

Issue Description

Correlation settings in both model and analysis settings schemas only allow parameter correlation_value whereas code expects at least one of hazard_correlation_value and damage_correlation_value

damage_group_fields and hazard_group_fields could also be moved from the model settings data_settings object to model_settings in order to expose them to users.

[fl-ndaq]

@benhayes21 model_settings.json schema also needs to be aligned. please make sure this is going in 3.2.6

[benhayes21]

I think the first bit has already been done. The group fields not so though.

[fl-ndaq]

@benhayes21 What's missing then? aside from the damage_group_fields and hazard_group_fields instead of correlation_value in model_settings schema