Add support for the most basic of keyboard commands. This includes Left Arrow, Right Arrow, Up Arrow and Down Arrow. It doesn't include cell interactions or focus recovery from row deletion. <!-- Edit the body of your new issue then click the ✓ "Create Issue" button in the top right of the editor. The first line will be the issue title. Assignees and Labels follow after a blank line. Leave an empty line before beginning the body of the issue. -->
Add support for the most basic of keyboard commands.
This includes Left Arrow, Right Arrow, Up Arrow and Down Arrow. It doesn't include cell interactions or focus recovery from row deletion.