Currently, the Selection feature behaves strangely with the Keyboard Support enabled, see [demo](https://plnkr.co/edit/hTOg7Flx5Fnm63jJ6CgX?p=preview):

* Enter, Ctrl+Enter and Shift+Enter select the rows, but do not function if the cell has focusable components
* Space works only on the checkbox column
* Ctrl+Space, Shift+Space do not work at all

Ideally, the Grid should support the following shortcuts when the Selection and KB Navigation are enabled:

* Select the current row on Space, regardless of the cell content
* Support Ctrl and Shift modifiers for Space

* Shift + Up/Down Arrow for adding/removing the next/last row to the selection.

Similar to the TreeList KB navigation:

https://www.telerik.com/kendo-angular-ui/components/treelist/keyboard-navigation/