Add column autosizing support to DataGrid

DataGrid now supports automatic column resizing:

• DataGrid now supports automatic column resizing using the new autosizeOnMount prop.
• Introduced the autosizeOptions prop for custom column resizing configurations.
• Added a new story, DataGridWithAutoSizing, to demonstrate the autosizing functionality.

Bonus Fixes:

• Standardized DataGrid MUI imports for consistency across components.
• Clarified the usage of SSR style constants.