Add agl-service-can-high-level-viwi

Add agl-service-can-high-level-viwi

Add agl-service-can-high-level-viwi recipe to replace the
high-level-viwi-service one from meta-agl (which will later be
removed), and update packagegroup-agl-ivi-services to use it.
Also remove high-level-viwi-service and agl-service-signal-composer
from the AGL_APPS list in packagegroup-agl-demo-platform, as they
are already pulled in via packagegroup-agl-ivi-services.

Bug-AGL: SPEC-3113

Change-Id: I4ceab8b5ab1a4653f59749317d1a72c31652ca54
Signed-off-by: Scott Murray <scott.murray@konsulko.com>