Drawer - automatically manage focus when drawer is opened/closed

Follow up for core issue https://github.com/patternfly/patternfly/issues/5319
A more consistent solution than was used to fix https://github.com/patternfly/patternfly-react/issues/8394

move the close button to the top of the drawer body rather than the end.

The modal component automatically places focus on the first interactable element in the modal when it is opened.
In the case of the Drawer, that should be the close button by default.
If the close button is not provided, then it should be the first interactable element in the drawer.
If there are no interactable elements, focus should be placed on the drawer body.

Like the modal, this should happen automatically for the drawer, unless overridden by the consumer.

When the drawer is closed, focus should be returned to the drawer toggle - or at least, the props needed for the consumer to implement this focus management should be exposed. All related examples/demos should be updated to use this behavior (including the wizard with drawer)

Jira Issue: PF-145

Empieza comparando el comportamiento del foco de Drawer con el comportamiento existente de Modal y revisa los ejemplos de Drawer, incluido el wizard con drawer. Implementa el comportamiento de foco indicado al abrir y cerrar, con sobrescrituras del consumer, y después actualiza todos los ejemplos y demos relacionados. Se considera terminado cuando el foco llega al botón de cierre, al primer elemento interactivo o al cuerpo del drawer según corresponda, y vuelve al toggle del drawer al cerrarlo.