[DU09-0]Adding the NetworkStatsCollection Builder

The purpose is provide NetworkStatsCollection.Builder as
public API for adding the stats {@link NetworkStatsHistory}

Bug: 215862801
Test: atest NetworkStatsCollectionTest
Change-Id: I65ad589473cbb7785cbe8297f793ce9f18a55c35
1 file changed
tree: 6ffad188a4d2b9099cd3febb3bd925c9e4c4b65c
  1. framework/
  2. framework-t/
  3. service-t/
  4. services/
  5. tests/