REST API such as 'POST Report User' is needed - add user to the report's direct access

[seojeong]

Currently, there is only REST APIs to add users to the dataset(semantic model)'s direct access.

• To add users, please refer to the API: Datasets - Post Dataset User - REST API (Power BI Power BI REST APIs) | Microsoft Learn

• To add user in groups, please refer to the API: Datasets - Post Dataset User In Group - REST API (Power BI Power BI REST APIs) | Microsoft Learn

User needs REST API to add users to the report's direct access.

This function is needed for automation of adding users to report's direct access.