make: Add Patch Trichrome script

 * inspired form calyx and https://github.com/danielfullmer/robotnix/blob/master/modules/apps/chromium-trichrome-patcher.py



- make: Catch exception for no certdigest, Fixes build for non-trichrome browser apks

- make: Use aosp test key for trichrome

Signed-off-by: althafvly <althafvly@gmail.com>