ContextMenuItem API in Vue Grid API component

Defines the default items of context menu.

• AutoFitAll
• AutoFit
• Group
• Ungroup
• Edit
• Delete
• Save
• Cancel
• Copy
• PdfExport
• ExcelExport
• CsvExport
• SortAscending
• SortDescending
• FirstPage
• PrevPage
• LastPage
• NextPage