This change adds include files containing the list of source
repositories that are strictly needed for each OpenHarmony v3.0 targets.
Their filenames are based on the package and machine names for a given
target.

These files must be included in recipe bb files for each target, before
the required openharmony-sources-3.0.inc. The inclusion order is
important because some repositories are cloned inside other repositories
and can overwrite themselves.

Also, these files must be included using 'include' and not 'require'
since some combinations of package and machine names don't exist so
using 'require' would fail for these non-existing files.

Signed-off-by: Thierry Escande <thierry.escande@huawei.com>