Allow/fix aggregation includedBuilds

[gmazzo]

What is your use-case and why do you need this feature?
kover integrates with Gradle's dependency resolution system by exposing a kover configuration to aggregate projects

As includedBuilds by convention exposes a dependency coordinate (implicit dependencySubstitution), declaring it as a kover dependency is expected to aggregate the child build into the main report.

dependencies {
    kover(":build-logic")
}

This setup does not break the build, the correct koverArtifact[TOTAL] variant is resolved for the included build, but the report does not aggregate it.

https://scans.gradle.com/s/2nb3nedv4ntsm/dependencies?focusedDependency=WzAsMCwyLFswLDAsWzJdXV0&toggled=W1swXSxbMCwwXV0

Running ./gradlew :koverHtmlReport produces a report only containing main build modules:

While running ./gradlew :build-logic:koverHtmlReport, is correctly computing the build-logic modules (some now not aggregated in the root one):

Describe the solution you'd like
Included Builds should be transparently resolved as any other kover dependency and included in the aggregated report. Variants are there, it's seems to a matter of the internal plugin resolution strategy.

Important

I provided a sample project at https://github.com/gmazzo/kover-demo-aggregation-issue/?tab=readme-ov-file#includedbuilds-not-aggregating

[shanshin]

Thanks for report!
Unfortunately, Composite Builds are not supported at the moment, there are a number of technical limitations why it does not work in its current form.

[shanshin]

A task has already been opened to design support for such types of builds.

[shanshin]

Closed as a duplicate of #487