Move BaseNetdUnsolicitedEventListener to frameworks/libs/net

Move BaseNetdUnsolicitedEventListener to frameworks/libs/net and
create a new library - netd-client for using.
Also remove netd_aidl_interface-unstable-java since netd-client
links to the stable one.

Bug: 174837473
Test: Manual test and check the log.
Change-Id: Id65142b8c13a6cccbfe387d4ab757967497546e6
3 files changed
tree: 2742603978059d114afc62cf08085cbdab112ca5
  1. framework/
  2. tests/
  3. Tethering/
  4. .gitignore
  5. OWNERS
  6. PREUPLOAD.cfg
  7. TEST_MAPPING