Add local serivce for WifiScanner and migrate wifi framework to use
local service.

Migrating the Wifi framework scanning to use the local service introduced for WifiScanner.
The local service serves the same process wifi framework scanner client
without going through the WifiScanner system service, and avoid creating
extra wifi scanner thread in system_server.

Bug: 248062698
Bug: 237211240
Test: atest FrameworksWifiTests

Change-Id: I0cf580f3731fda96ba3cd5b19618c383fe5584b5
10 files changed