Adding coverage reports to pipeline

[Irakus]

This pull request includes updates to the CI workflow and enhancements to the Go test configuration. The most important changes involve extending the timeout for Go tests, adding steps to handle code coverage reports, and improving the test command options in mage.

CI Workflow Updates:

• .github/workflows/lint-test-build-publish.yml: Increased the timeout for the test-go job from 15 to 25 minutes to allow for longer test runs.
• .github/workflows/lint-test-build-publish.yml: Added steps to copy all coverage reports to a single directory and upload them as artifacts. This ensures that coverage data is collected even if some tests fail.

Go Test Configuration Enhancements:

• mage/test.go: Enhanced the Go test command by adding options to fail on pending tests, fail on empty tests, keep going on errors, and include code coverage. This makes the test process more robust and provides better coverage information.This pull request includes changes to improve code coverage reporting and test configuration. The most important changes are the addition of steps to collect and upload coverage reports in the GitHub Actions workflow, and the inclusion of coverage options in the Go test command.

Improvements to coverage reporting:

• .github/workflows/lint-test-build-publish.yml: Added steps to copy all coverage reports to a single directory, compress them into a tar file, and upload the tar file as an artifact.

Enhancements to test configuration:

• mage/test.go: Included coverage options --cover and -coverpkg=./... in the Go test command to enable code coverage reporting.