Allow revealing of coverage changes on files not in the PR

[tim-gq]

Problem statement

At the moment you're sending me alerts about changed/unreliable coverage for files not changed in the PR, but not providing me an easy way to retrieve the details I need to act on them. Manually retrieving the information is difficult and time consuming.

Solution brainstorm (optional)

On the Qlty coverage page, (i.e. https://qlty.sh/gh/x/projects/x/pull/11753/coverage) show the coverage for these files that aren't part of the files changed.

i.e. have them collapsed by default maybe as they're not of primary importance, but be able to click to expand the coverage report for the file? That would allow me to easily tell which lines of the file have lost coverage due to a non-deterministic test, and add better coverage for the file.

[davehenton]

This has now been resolved; coverage for files not touched in the PR is now highlighted in the "Indirect Changes" tab on the PR results page.