[RFCLAT#4] Move clat ipv6 address setup from clatd to netd am: 5c112131d9 am: 44fb25a5ec

Original change: https://android-review.googlesource.com/c/platform/external/android-clat/+/1903036

Change-Id: I1c2faf7341dc1ede9b1d239021247aa8ed642cb5