[Feature] Add support for kibana space advanced settings

[aizerin]

Describe the resource you would like to have implemented. more user-friendly advanced settings for Kibana space

Describe the solution you'd like new option with advanced_settings under elasticstack_kibana_space or new resource

Describe alternatives you've considered I tried to use elasticstack_kibana_import_saved_objects. But there is a problem with upgrades. You have to manage a lot of fields like typeMigrationVersion, coreMigrationVersion, buildNum, ...

Currently, I created my provider which uses /s/%s/internal/kibana/settings

[tobio]

Requires https://github.com/elastic/kibana/issues/239539