[Feature](react-data-grid-react-window): Add a Footer in DataGrid

[it950]

Package

react-data-grid-react-window

Describe the feature that you would like added

Add a Footer in DataGrid, it is very usefull when display grid summary infomation

Additional context

No response

Have you discussed this feature with our team

No response

Validations

• Check that there isn't already an issue that requests the same feature to avoid creating a duplicate.

Priority

None