[Request] Annotate external calls in some way

[jmhickman]

One thing I like about another vscode solidity addon is that it puts a ⚠️ in the gutter on the line where there are external calls.

Could this be added?

[michprev]

Yes, I like this kind of visualization as well. Unfortunately, afaik LSP protocol does not allow us to render anything next to the line number. LSP servers written as a part of an extension can take advantage of having direct access to VS Code API.

Implementing this may still be possible, but I don't see an easy way. I'll keep this issue open and continue to investigate.