Use crystal i as backend

[RomainFranceschini]

Right now the code submitted to the kernel is compiled using parts of the icr shard.

Upcoming crystal interpreter crystal-lang/crystal#11159 would be a perfect fit.

[kojix2]

Hi @RomainFranceschini

I write simple Python wrapper kernel for Crsytal.

https:/kojix2/crystal_kernel

I am not good at Python.
If icrystal could support crystal i, that would be the best.

[bcardiff]

I have explored how to integrate the interpreter and some other ideas in https:/bcardiff/icrystal . Without this project I wouldn't have been able to start that exploration. Thanks!

[RomainFranceschini]

@bcardiff I'm really glad you did this fork, thank you!