Using Simple as the SoN backend for EeZee lang

[dibyendumajumdar]

Hi,

Thank you once again for the amazing work you guys are doing!

I am excited to share that I am using the Simple chapter 21 implementation as a SoN backend for EeZee lang.

This is still WIP and a bit hacky, as I just got it all to compile today.

Implementation is here https://github.com/CompilerProgramming/ez-lang/tree/main/seaofnodes