Improvements for linux arm64 support

[horstle]

• Check if the downloaded library fits the system architecture/bitness, possibly by using Improve get_lib_version, use as check #415
• pass a different path to find_file (cros_arm64 instead of cros_arm) for the aarch64 images not necessary with naive search
• Maybe create a github action which analyzes some of the 32bit images, to see if they made the switch to 64bit?