feat: rollup rework

[mpolitzer]

This PR simplifies the cartesi machine rollup by removing input-metadata, voucher_hashes and notice_hashes.

• The input-metadata contents will be integrated into the rollup input, details are yet to be determined.
• vouchers, notices and other types of messages will now be encoded in userspace. The cartesi-machine and the linux driver will treat them as binary blobs.
• yield will now pass the blob size in its data field. This way we won't need to inspect the encoded data.
• yield/HTIF won't care about the details of the messages anymore, so we will simplify the defines as well.

test

• You need a compatible kernel, such as: rollup driver simplification linux#4
• Then run:

./remote-cartesi-machine 127.0.0.1:5001 &
cartesi-machine.lua --remote-address=127.0.0.1:5001 --checkin-address=127.0.0.1:5002 \
  --rollup-advance-state=input_index_begin:0,input_index_end:1 \
  --rollup --flash-drive=label:test,filename:../../kernel/artifacts/linux-selftest-5.15.63-ctsi-2-v0.0.0.ext2 \
  -- /mnt/test/drivers/cartesi/rollup_read

[diegonehab]

I don't think we are removing exceptions and reports yet. So let's keep the names. Also, see comments in code. There was a recent merge in main, so please rebase.

[diegonehab]

See comment.

[edubart]

I reviewed and only found minor issues while testing locally.