Passing generateGroupId props

[Luisgustavom1]

Description

In this pull request, I added the optional generateGroupId prop to the TreeDataGrid component to allow for better control over the group IDs.

Changes

• Added the generateGroupId prop to the TreeDataGrid component.
• This prop allows developers to generate custom group IDs based on their own logic.
• The generateGroupId function takes a groupKey and parentId params as input and returns a generated group ID.
• This prop provides flexibility in generating unique group IDs for each row in the grid.

Usage

To use the generateGroupId prop, simply pass a function as the value for the generateGroupId prop when rendering the TreeDataGrid component.