220710-01 - untested experimental images for asurada and cherry chromebooks

• see: https://github.com/hexdump0815/imagebuilder/tree/main/systems/chromebook_asurada and https://github.com/hexdump0815/imagebuilder/tree/main/systems/chromebook_cherry
• IMPORTANT: please have a look here - https://github.com/hexdump0815/imagebuilder/blob/main/doc/important-information.md
• these images are built blindly (i.e. without having the hardware around for testing) and based on the corresponding chromeos kernel sources (as mainline would not be ready enough yet anyway) and it is not yet clear if they will even boot properly
• they are just intended for initial testing for whoever has the hardware around
• bullseye only so far as it does not make sense to build more as long as it is not clear if they will even boot
• in case someone tries one of the images, please leave some feedback about how well it worked in these github issues - for asurada: #60 and for cherry: #61