Sync riscv bootstrap seeds (only comment updates.
Pad stage1 to 512 bytes and rename with img extension.
Add documentation and builder-hex0-x86-stage1 seed.
Here are the bare minimal binary seeds for every host architecture
NEVER TRUST ANYTHING IN HERE
you have been warned
hex0 can be approximated with: sed 's/[;#].*$//g' $input_file | xxd -r -p > $output_file
kaem-optional-seed can be replaced by any shell of your choice as it is just a minimal shell written in hex0