Implement backup/restore commands

[SailReal]

• backup options (adb)

  • [x] data of app
  • [x] data with apks
  • [x] single app with data
  • [x] sd card

• Simple restore

• list available packages

• pull/push files/folders

adb options: https://developer.android.com/studio/command-line/adb.html

unpack .ab backup: https://forum.xda-developers.com/showthread.php?t=2011811 sources: https://github.com/nelenkov/android-backup-extractor/blob/master/src/org/nick/abe/AndroidBackup.java