- Fix header formatting wherever required
- Add missing copyright header as well
Signed-off-by: Aayush Gupta <theimpulson@e.email>

- Drop unused imports
- Arrange existing imports
Signed-off-by: Aayush Gupta <theimpulson@e.email>

Arnau Vàzquez authored Apr 27, 2020 and Romain Hunault committed Apr 27, 2020

Currently, there are two types of Xapk supported
	1. OBB + APK
	2. Multi arch APKs

Current implementation install XAPK from internal storage