https://forum.xda-developers.com/apps/google-camera-mods
https://www.celsoazevedo.com/files/android/google-camera/
review - https://www.gizchina.com/2020/01/31/how-to-install-gcam-7-3-mod-in-all-android-smartphones/
origin - https://www.pipiscrew.com/?p=16706 gcam-mod