title: How to save and restore current page in ag-grid
body: <p>Good day!</p>
  <p>I use ag-grid to show long list (with multiple pages) in 'infinite' row model with enabled paging. User can jump page to page. At some point user can click on row to view details. When he press back i want to restore UI state. I already implement restore for sorting and filtering. But can't find how to do it for paging. In other words i need to specify current page when ag-grid is created. I call 'paginationGoToPage' method in 'mounted' callback, in handler of 'onGridReady' event. No luck. ag-grid always start from first page. Please advise</p>