Add in-line compilation error messages

[samajammin]

Summary

We should add add in-line compilation error messages similar to how the Solidity plugin for VSCode (which also uses Monaco) displays errors:

Currently these errors pop up in the console output:

This is better than nothing but it's more time consuming to hunt down the offending line vs. showing the error in-line w/ maximum context.

Motivation

This would be a nice DX improvement.

Describe alternatives you've considered

None.

Additional context

Recommendation from a recent feedback survey of Ethereum developers.