feat: add name de-mangling for C++ symbols in the Test Explorer

[rjaegers]

This changes visible behavior

The following changes are proposed:

• Add name de-mangling for C++ symbols in the Test Explorer view

The purpose of this change

Currently when coverage is measured during test execution the mangled name is shown in case of C++ symbols. This PR adds name de-mangling for C++ symbols. When the symbol is not a mangled C++ name, the input is left un-touched.

[rjaegers]

@gcampbell-msft this is the PR that adds de-mangling. I have added a package to do the actual de-mangling, and I think I should not have pushed the yarn.lock file. I will revert the changes in that file and hope you and your team can do the magic to get the added package onboard.

[gcampbell-msft]

Overall, I don't have any concerns necessarily, but being somewhat unfamiliar with the packages available in node for demangling, I wanted to ask, why did you pick this specific one?

I see that there are a couple of npm packages for it: https://www.npmjs.com/search?q=demangler, and there are a couple that have more downloads (not that more downloads = better quality), and I was curious if there was any reason specifically?

Thanks

[rjaegers]

I picked the package that:

1. had tests
2. I could review the code of
3. satisfied my API requirements (i.e. either demangle the mangled name and return that, or return the input untouched)

That left the demangler-js package as most viable option in my opinion.

[rjaegers]

@gcampbell-msft is there any further action required from my side to drive this home?

[gcampbell-msft]

@rjaegers No, nothing from your side, I need to get around to updating the package-lock.json on our side. Thanks for the ping.

[gcampbell-msft]

@rjaegers Update, I've updated the yarn.lock file and kicked off the builds, we will review and hopefully merge this PR today or next week.