Support for code coverage visualization in VSCode

[lgalabru]

See https://marketplace.visualstudio.com/items?itemName=ryanluker.vscode-coverage-gutters for developer experience. We could have a mode where the coverage is refreshed every-time the developer save a file: having coverage with such a tight feedback loop would be a serious productivity boost.

[hugoclrd]

I'll test if it already works. See with @MicaiahReid about the lcov format compatibility issue

[hugoclrd]

@lgalabru It seems to be working fine (I probably need to test on bigger project). The only requirement would be to rename the lcov file into lcov.info (or add the "coverage-gutters.coverageFileNames" option in the workspace settings)

Screenshot:

[lgalabru]

That's really cool? So is this feature native to VScode, or do we have to install the extra extension? would it make sense to augment our extension to support this out of the box?

[lgalabru]

We should probably document this! cc @LakshmiLavanyaKasturi

[hugoclrd]

This is with the extension you linked.

would it make sense to augment our extension to support this out of the box?

Why reinvent the wheel? Or it would be a very low priority task