Add Test Coverage Badge in GitLab

This issue has been created to add a test coverage badge for the dedal project. As part of this update, the README file will be modified to include the badge, providing a clear visual representation of the project's test coverage status.

Steps:

Navigate to the Project Settings in GitLab:

• Go to your GitLab Project page.
• On the left sidebar, select Settings > General.

Enable Coverage Badge:

• Scroll down to the Badges section.
• Add the coverage badge:
  • Under Badges, click Add Badge.
  • Set the Link to the following URL:
    • https://gitlab.ebrains.eu/ri/tech-hub/platform/esd/dedal/badges/master/coverage.svg
    • Choose the Image option and the badge will display the coverage status.

The GitLab jobs enabling coverage-related functionality have been implemented as part of https://gitlab.ebrains.eu/ri/tech-hub/platform/esd/yashchiki/-/merge_requests/6, Related issue: VT-87