Deprecate VNDK based on feature flag

A new feature flag RELEASE_DEPRECATE_VNDK is added to control VNDK
deprecation. Use this value to decide whether VNDK should be deprecated,
and keep it overridable with command for now.

Bug: 301346137
Test: Checked if aosp_cf_x86_64_phone-trunk_staging is VNDK deprecated
Change-Id: Ib9bb48fbfb14d1ab87f939439da4f23e364d1173