I've created a small magisk module, with that you can use the Argument Reality function inside the Google Camera.
It works on LOS 15 and LOS 15.1, it works maybe also on nougat but I can't guarantee.
When you want to test it on other devices than the Mi5s, please don't forget to make a backup.
Every module can easily flashed inside the Magisk Manager or with TWRP.
Additional informations for all downloads:
only Includes the necessary configurations and changes in the build prop, to get it fully working you need additionally the Apps Package
Includes everything you need, in one module.
(Modded GCam, ARCore, ARStickers and all configurations)
Only one module with all necessary configurations you have to flash additionally the Apps module.
Android 8.1 V2:
[Test] Android 7.0 -7.1.2
Apps Module (for Android 7.0 - 8.0 and the 8.1 mini module)
Apps Module V2:
Do not thank me, just thank him @Arnova8G2