agl-demo-control-panel: add recipe and image

Add recipe to build the agl-demo-control-panel application, and a
corresponding new image recipe, agl-ivi-demo-control-panel, that
yields an image that runs the control panel fullscreen on boot.

Bug-AGL: SPEC-4952

Change-Id: I17d762230e48ab47de3f6214a2a9dc1f59f3a8ea
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/29347
Reviewed-by: Hiroyuki Ishii <ishii.hiroyuki002@jp.panasonic.com>
Reviewed-by: Lisandro Perez Meyer <lpmeyer@ics.com>
ci-image-boot-test: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jenkins Job builder account
ci-image-build: Jenkins Job builder account