Add fake bootloader system properties for SafetyNet
Description
SafetyNet checks those system properties to make sure the device bootloader is locked.
Those fake system properties have to be set before reading kernel command line to be taken into account.
This patch is a backport of the following patch done by kdrag0n, the author of the Universal SafetyNet fix Magisk module: https://github.com/ProtonAOSP/android_system_core/commit/3102e9e8c
Issues
https://gitlab.e.foundation/e/backlog/-/issues/4353
Edited by Jonathan Klee