Feature request - expose filteredSortedData as a public API

[tkiryu]

Description

Could you expose filteredSortedData as a public API?

Problem

Currently, in order to get dataview(which means filtered and sorted data) of igx-grid, we have to use two APIs, filteredData and IgxGridSortingPipe.

I'm implementing as below to achieve that. But It's a little bother.

  @ViewChild('grid') grid: IgxGridComponent;
  constructor(
    private gridSort: IgxGridSortingPipe,
  ) {}

  getDataView(): any[] {
      const data = this.grid.filteredData ? this.grid.filteredData : this.grid.data;
      const dataView = this.gridSort.transform(data, this.grid.sortingExpressions, this.grid.id, this.grid.pipeTrigger);
      return dataView;
  }

Expect

After implementing, I found that filteredSortedData is doing almost the same as I do.
filteredSortedData public API would save us a lot of time and be very convenient.

I'd appreciate your consideration.