1.2-op3

Changelog :

Adding option for user to disable system verification after installation.
Adding backup/restore script for addon.d.
The both mean a better support for dirty flash.
|-> I do not recommend any dirty flash!
Adding FreedomOS wallpapers designed by @badboy47.
|-> Available in /sdcard/FreedomOS_wallpaper.
Updated to OxygenOS 3.2.2:
- Improved notification management in doze.
- Addressed alert slider/silent mode issue.
- Disabled fingerprint sensor while in pocket.
- Added NFC toggle in quick settings.
- Improved noise cancellation in video recording.
- Updated 4K video recording codec.