Move all wearable samples to development/samples/wearable

Update build.gradle to compile them all, and remove
gradle stopships.

Copied from vendor/google_clockwork klp-modular-dev as of:
01930cc85bc1ba974a412db7d3c9d17387702e16

Bug: 15591212
Bug: 15264403

Change-Id: I4d05c35c995e675d92039b1dfb2a33e454285af5
438 files changed