Add support for compilation via Yul IR

[CodeSandwich]

Description

Adds support for compilation via Yul IR. Solidity doesn't consider it experimental since 0.8.13.

Checklist

• tested locally (TBH I have no idea how to do that 😬)
• added automated tests
• updated the docs
• updated the changelog

[d-xo]

Thanks!

To test locally I think you should be able to run dapp mk-standard-json adnd check the contents of the resulting file.

[CodeSandwich]

To test locally I think you should be able to run dapp mk-standard-json adnd check the contents of the resulting file.

The biggest problem is compilation and setting up the environment, I have no idea how to do that. I have no experience with Haskell, Nix or the pipeline they create and there are no instructions in README for script kiddies.

[d-xo]

You can do nix-build -A dapp from the root to build a version of dapp from your local checkout. The resulting executable will be placed under ./result/bin/dapp.

[CodeSandwich]

I've tried it out and it works! dapp build --via-ir triggers compilation via Yul and so does export DAPP_VIA_IR=1. dapp mk-standard-json with DAPP_VIA_IR=1 does produce a JSON with an extra "viaIR": true,, which makes sense.

The actual compilation and trial showed me a few places where I haven't adjusted code for support of --via-ir, I've fixed it and force-pushed to prevent leaving junk in the commit history, it's a tiny PR anyway.

[d-xo]

Thanks!!