Rework IVI image packagegroups

The all-in-one packagegroup-agl-image-ivi makes it difficult to
use the dependencies it pulls into images in a piecemeal fashion.
It has been removed and instead its dependencies are included in
the base IVI image defintion.  As well, the IVI services
packagegroup has been split to have packagegroups for applaunchd
versus platform-dependent services (audio, HVAC, etc.).
These will enable doing using conditional logic in the IVI image
defintion that will be more visible and not break binary packaging.

Bug-AGL: SPEC-5082

Change-Id: Ia4e95656e2fbc6d8ed6ba98c19b33f6fe6ca5971
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/29698
ci-image-boot-test: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
ci-image-build: Jenkins Job builder account
Tested-by: Jenkins Job builder account