[networking] add {bytes,packets}_{sent,received}

...with initial reports giving us order-of-magnitude buckets - i.e.
we'll be able to differentiate between a device that's sent a gigabyte
of data and a device that's sent 10 gigabytes of data.

Bug: 42092
Change-Id: I86e352c926b4e359117c9f68da3a2430bd03339e
1 file changed
tree: 460c55eecf94ae3d9c2ef54991e557eab9371d5b
  1. .gitignore
  2. BUILD.gn
  4. check.py
  5. cobalt_internal/
  6. fuchsia/
  7. projects.yaml