fix(solc): convert source paths on windows

[mattsse]

Motivation

this fixes yet another path issue on windows which can result in duplicate (src\\File.sol and src/File.sol) artifacts

Ref https://github.com/foundry-rs/foundry/runs/7586758672?check_suite_focus=true

solc uses unix style paths /, if it tries to resolve an import src/File.sol it checks the VFS for a corresponding source, src\\File.sol does not necessarily match so it will resolve from disk which results in duplicated entries in the output.

Solution

convert source paths to / on windows before invoking solc

foundry tests: foundry-rs/foundry#2531

PR Checklist

• Added Tests
• Added Documentation
• Updated the changelog

[gakonst]

gotta love windows. i wonder if we've been doing things the wrong way all this time, or if it's just full of footguns? how can we avoid these in the future?

[mattsse]

I guess the main problem is/was I've never worked with windows and just didn't know any better lol

since windows also supports / I think we can just convert all of them when ethers-solc spits out the Artifact set only just only work with slashed paths

trying to sort things out here foundry-rs/foundry#2531 and make sure everything passes now, getting some weird failures that only happen in the cross compile tests...

[gakonst]

smol lint issue otherwise merging

[mattsse]

lint issue is fixed here #1541

I'd like to keep this open until foundry-rs/foundry#2531 passes

this is incredible tedious lol for some reason a random fuzzing test keeps failing randomly...

[mattsse]

@gakonst this is ready now, it will spit out / paths on windows now