[WifiScoreReport] Add dumpsys for scoring data

Add a dumpsys handler to capture the data used for calculating
wifi scores.

The logged data is limited to about 12 hours, to conserve memory.

Timestamp formatting is consistent with (most) of the other
timestamps used in bugreports.

Bug: 62448744
Test: manual, new unit tests
Change-Id: Iba3f3dc4911e7939a5afacb5902f425415bbc5f0
4 files changed
tree: 136392ea5eee04dd84ba238166298a4b9de8fbcc
  1. service/
  2. PREUPLOAD.cfg