[AWS::LakeFormation::DataLakeSettings] - [Coverage] - Missing ReadOnlyAdmins Setting

### Name of the resource

AWS::LakeFormation::DataLakeSettings

### Resource name

_No response_

### Description

ReadOnlyAdmins were added to Lake Formation a couple years back, but CloudFormation does not have a setting for this in the DataLakeSettings construct. It only allows setting the Admins (full access administrators). Could support for ReadOnlyAdmins be added? The lakeformation:PutDataLakeSettings API allows setting this value programatically, we just need CloudFormation coverage I believe.

#### References
- CFN DataLakeSettings construct: https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-lakeformation-datalakesettings.html
- lakeformation:PutDataLakeSettings API: https://docs.aws.amazon.com/lake-formation/latest/APIReference/API_PutDataLakeSettings.html

### Other Details

I believe this request is in a similar vein but for a different parameter than another coverage request for Database & Catalog creators to be added to DataLakeSettings: https://github.com/aws-cloudformation/cloudformation-coverage-roadmap/issues/2249

Start with the referenced CloudFormation DataLakeSettings resource documentation and the lakeformation:PutDataLakeSettings API reference, then compare the supported settings with ReadOnlyAdmins. Done means CloudFormation coverage exists for configuring ReadOnlyAdmins in AWS::LakeFormation::DataLakeSettings.

Written by the indexing model from the issue text.