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
-->

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: macos-latest
     name: Validate PR
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up JDK 21
         uses: actions/setup-java@v5
@@ -32,14 +32,16 @@ jobs:
           cache-read-only: true
 
       - name: Build with Gradle
-        run: ./gradlew clean build
+        run: ./gradlew clean ktlintCheck build koverLog koverHtmlReport
 
-      - name: Upload JUnit test results
+      - name: Upload Reports
         if: always()
         uses: actions/upload-artifact@v4
         with:
           name: junit-results
-          path: '**/build/test-results/test/*.xml'
+          path: |
+            **/build/test-results/test/*.xml
+            build/reports
 
       - name: Disable Auto-Merge on Fail
         if: failure() && github.event_name == 'pull_request'