[Wi-Fi] Apply WifiTrackerLib objects in Wi-Fi Slice

This change uses WifiTrackerLib's WifiPickerTracker & WifiEntry
to replace SettingLib's WifiTracker & AccessPoint.

This change includes

1. WifiScanWorker has the callbacks similar to a lifecycle component
   but it's not a lifecycle component. Let WifiScanWorker implements
   LifecycleOwner and provides #getLifecycle() for WifiPickerTracker.

2. Remove captive portal related code because WifiEntry#connect will
   handle captive portal login if it's necessary.

3. Create WifiSliceItem to wrap WifiEntry because WifiEntry is an
   abstract object and it does not provide copy constructor.
   Without copy construcor, Wi-Fi Slice may show unexpected information
   when a WifiEntry is updated.

4. Use WifiTrackerLib's NetworkDetailsTracker & WifiEntry in
   WifiDialogActivity because it gets a WifiEntry key from Wi-Fi Slice.
   NetworkDetailsTracker can get the WifiEntry of th key.

Bug: 155613549
Bug: 152571756
Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.wifi.slice
      make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.wifi
Change-Id: I0718f4647cea007a9b701922f3121a388dd43918

src/com/android/settings/wifi/AddNetworkFragment.java

@@ -32,6 +32,7 @@ import androidx.annotation.VisibleForTesting;
 
 import com.android.settings.R;
 import com.android.settings.core.InstrumentedFragment;
+import com.android.settings.wifi.dpp.WifiDppQrCodeScannerFragment;
 import com.android.settings.wifi.dpp.WifiDppUtils;
 
 /**
@@ -116,7 +117,7 @@ public class AddNetworkFragment extends InstrumentedFragment implements WifiConf
             }
 
             final WifiConfiguration config = data.getParcelableExtra(
-                    WifiDialogActivity.KEY_WIFI_CONFIGURATION);
+                    WifiDppQrCodeScannerFragment.KEY_WIFI_CONFIGURATION);
             successfullyFinish(config);
         }
     }