Update DataUsageSummary to include carrier provided information.

This CL augments the existing data usage display with carrier provided
information about data usage and plans when available from the new
frameworks API.

Test: manual
Test: make RunSettingsRoboTests
Bug: 70950124

Change-Id: Idde1ff786e8c5dbc04e58ffbcc0fd18789682699
9 files changed