[Catalyst] Location screen migration

- Add a flag for the migration
- Add the skeleton of the screen

Test: atest LocationScreenTest
Bug: 368360458
Flag: com.android.settings.flags.catalyst_location_settings
Change-Id: Id8b7d748210d1cacf99e3d61236706029b862289

src/com/android/settings/location/LocationSettings.java

@@ -29,6 +29,8 @@ import android.os.SystemProperties;
 import android.provider.Settings;
 import android.util.Log;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceGroup;
 
@@ -185,4 +187,9 @@ public class LocationSettings extends DashboardFragment implements
                     R.string.location_settings_tooltip_text_for_chrome));
         }
     }
+
+    @Override
+    public @Nullable String getPreferenceScreenBindingKey(@NonNull Context context) {
+        return LocationScreen.KEY;
+    }
 }