Add recipes for new hmi fw

Add recipes for new hmi fw

    Add recipesc for agl-service-windowmanager-2017,
    agl-service-soundmanager-2017,
    agl-service-homescreen-2017 and homescreen-2017.

    [Patch Sets 2]
    Modify homescreen-2017_git.bb to use aglwgt make package.
    [Patch Sets 3]
    Modify agl-service-windowmanager-2017_git.bb to use aglwgt make package.
    Modify agl-service-soundmanager-2017_git.bb to use aglwgt make package.
    [Patch Sets 4]
    Modify agl-service-homescreen-2017_git.bb to use aglwgt make package.
    [Patch Sets 5] (jsmoeller)
    Modify layer and add packagegroup containing the required packages.
    Modify feature name to be agl-hmi-framework to be consistent in naming
    Mofify local.conf.inc to set DISTRO_FEATURES flag instead of setting IMAGE_INSTALL.

Change-Id: Iac998b5c9ed519649c8c367e97a5aa31c6140c26
Signed-off-by: zheng_wenlong <wenlong_zheng@nexty-ele.com>
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>