Consolidate all wrappers used for testing.

- Add the wrapper package and move all wrappers to the wrapper package.
- Get rid of some wrapper interface/impl implementation and have a
wrapper class directly.

Bug: 65634579
Test: make RunSettingsRoboTests
Change-Id: Ic757d8f7bacfa7a034c7e692205bc1dc4b0e1de1

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

@@ -20,7 +20,6 @@ import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.net.wifi.WifiManager;
 import android.nfc.FormatException;
 import android.nfc.NdefMessage;
 import android.nfc.NdefRecord;
@@ -43,6 +42,7 @@ import android.widget.ProgressBar;
 import android.widget.TextView;
 
 import com.android.settings.R;
+import com.android.settings.wrapper.WifiManagerWrapper;
 import com.android.settingslib.wifi.AccessPoint;
 
 import java.io.IOException;