Allow koverCollectReports to aggregate into single report file

[brizzbuzz]

Hey, very excited about this plugin! I think there would be a nice addition to make to the koverCollectReports task that would allow all collected reports to be piped into a single discoverable file. At the moment it seems to simply take the distinct reports from each module and move them all into a parent folder.

For HTML this may even be as simple as having the koverCollectReports task add an index.html file in the html directory here that provides hyperlinks to each child module results. For XML I admit I'm just not sure how all that works haha, being lazy.

The reason being, that for CI code coverage integration, often times you need to explicitly list the file or files that you wish to upload. Previously for Jacoco, I had a very ugly hand rolled gradle task that would smush all jacoco reports into a single report, but it would be nice if Kover offered this functionality out of the box :)

[shanshin]

Hi,
this task already in progress #90 (if a merged report is suitable for you).
Relates #43

[brizzbuzz]

Perfect 👌 gonna close this