Add AppDataUsagePreference for Spa

This is used in new App Info page.

To try:
1. adb shell am start -n com.android.settings/.spa.SpaActivity
2. Go to Apps -> All apps -> [One App] -> Mobile data & Wi-Fi

Bug: 236346018
Test: Unit test & Manual with Settings App
Change-Id: I1ebcc2c5197eef0c35a2b188b7edb3594fa4ae2a