Add dependencies for art boot_image

Adds dependencies for the art boot image. The art boot image only
includes modules from the com.android.art APEX and so this change adds
some verification to make sure that the APEX component of the
configuration is compatible with the boot_image's apex_availabilty
settings and then just adds dependencies on the modules. It relies on
the normal APEX processing to cause the com.android.art variant of the
boot_image to depend on the equivalent variant of its contents.

This purposely does not check that the configuration specifies an APEX
of com.android.art and instead relies on the apex_available property
being set.

Bug: 177892522
Test: m nothing
Change-Id: I75a8238546b01e1f166a1d1444215f4afb441780