This commit sets up the initial Thread network service for the
Android Thread feature which allows an Android device to create
a Thread network and being a Border Router.
See https://www.threadgroup.org/What-is-Thread for background of
Thread.
See b/235016403 for the Android Thread feature request.
Test: lunch aosp_cf_x86_64_tv-userdebug
m && launch_cvd
atest CtsThreadNetworkTestCases
Bug: 262683651
Change-Id: Ie1bb23084531f67165ec068ea3ca39592dbc01d1
Kangping Dong
commited