Add Kover check (#250)

## Motivation and Context

Make sure, that code is properly tested

## How Has This Been Tested?

Run `./gradlew clean ktlintCheck build koverVerify koverLog
koverHtmlReport` on CI

## Changes

- Integrate Kover plugin for code coverage analysis
- Publish Html report
- Run `./gradlew clean ktlintCheck build koverVerify koverLog
koverHtmlReport` on CI

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
- [x] Build tooling update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [ ] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [ ] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->

gradle/libs.versions.toml

@@ -4,6 +4,7 @@ kotlin = "2.2.0"
 dokka = "2.0.0"
 atomicfu = "0.29.0"
 ktlint = "13.0.0"
+kover = "0.9.1"
 
 # libraries version
 serialization = "1.9.0"
@@ -59,6 +60,7 @@ ktor-serialization-kotlinx-json = { group = "io.ktor", name = "ktor-serializatio
 [plugins]
 kotlinx-binary-compatibility-validator = { id = "org.jetbrains.kotlinx.binary-compatibility-validator", version.ref = "binaryCompatibilityValidatorPlugin" }
 ktlint = { id = "org.jlleitschuh.gradle.ktlint", version.ref = "ktlint" }
+kover = { id = "org.jetbrains.kotlinx.kover", version.ref = "kover" }
 
 # Samples
 kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }