Extract kover configurations into a build-logic plugin

[nashcft]

Issue

• close Create a single coverage report by KotlinX Cover #761

Overview (Required)

Extracted kover configurations for each projects into a plugin like kotlinx.coroutines' convention plugin so that, when we add a new module, we don't have to care about applying kover plugin to it and adding kover declaration to report-aggregator module.

Links

Screenshot (Optional if screenshot test is present or unrelated to UI)

N/A

Movie (Optional)

N/A

[github-actions]

Test Results

211 tests   211 ✔️  6m 26s ⏱️
  11 suites      0 💤
  11 files        0 ❌

Results for commit f35f299.

♻️ This comment has been updated with latest results.

[takahirom]

The implementation in this PR is simple and great.
But there may be a tradeoff. This may prevent applying "Project Isolation".

https://gradle.github.io/configuration-cache/#project_isolation

However, there is a document that says we need to wait for the new API. So I would like to introduce this change for now! Thanks for your awesome contribution!

At this stage, we do not recommend that you change your plugin to be somehow "project isolation compatible", as there is no stable definition of what this means yet, nor are all the necessary APIs in place to allow this.

[takahirom]

Can you fix the conflict? 🙏

[nashcft]

Thanks for the review 🙏

Project Isolation

I've read that document and I understand this change will affect project isolation feature in current stage. But the feature is still in experimental, so I also think it should be OK that we use plugins or configurations like this for now 👍