Add licensing and metadata files for platform/external/obex am: 1419e08c2c am: 386f5be422 am: e9f833ab7e am: a71c0172e9 am: 52c303a716 Original change: https://android-review.googlesource.com/c/platform/external/obex/+/1991591 Change-Id: Iaadd234da95bfdf5d1e522d3ecd534de047d1ceb