Merge "[Thread] initial Thread network service" into main am: 01e6dadd1f am: e5f1122ec9 am: 9cdab0fd28

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2721333

Change-Id: Ib4dca8487d25b42e798f953a4a9912a4471ddb2e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>