Add NetworkOfferCallback to NetworkInterfaceState am: 41e249e380

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/18571877

Change-Id: Ie8c578ed2c02b6b9205ea0fd5324b6f46e2eb25a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>