[feat] SNOS Output

[drspacemn]

We should update SNOS output to have the messages count instead of the messages segment len.

References

https://github.com/keep-starknet-strange/snos/blob/main/src/io/output.rs

[Xaxxoo]

Hi @drspacemn, Is this issue still open ? if yes, I would like to be assigned to it.

[drspacemn]

Yes, please take

[glihm]

We're currently using the same SNOS program that Starknet uses, without modification. Will re-open for later changes when SNOS will be adjusted to cairo 1. 👍