[FEATURE] Table: Keyboard Handling
[FEATURE] Table: Keyboard Handling

- Enabled toggling of Group Header on ALT+UP/DOWN.

Change-Id: Ib3c349f8cba8537f332edf95b5b880469705b8dd

olirogers/openui5,nzamani/openui5,nzamani/openui5,olirogers/openui5,cschuff/openui5,cschuff/openui5,olirogers/openui5,SQCLabs/openui5,SQCLabs/openui5,nzamani/openui5,SAP/openui5,SAP/openui5,cschuff/openui5,SQCLabs/openui5,SAP/openui5,SAP/openui5