[Status Bar] Implement WifiRepository interface using WifiTrackerLib.

This CL also adds a flag to switch between using the current
WifiRepository and using the WifiRepository based on WifiTrackerLib.

Bug: 292534484
Bug: 292533677
Test: Flip WIFI_TRACKER_LIB_FOR_WIFI_ICON flag on -> verify wifi icon
generally still works
Test: dump WifiTrackerLibInputLog and WifiTrackerLibTableLog -> verify
data is included only with flag **on**
Test: dump WifiInputLog and WifiTableLog -> verify data is included when
flag is on **and** off

Test: atest WifiRepositoryViaTrackerLibTest

Change-Id: Ib74835e78399c6c5ca3821e4aed09bfc0925fc28