Adding Code coverage to the project

[rishavsharan]

Currently Code Coverage reports are not generated or published on build.
To generate CC, we need to update the repo to have

• tests integrated with the source code

• Jacoco as a dependency for Maven POM and gradle build files

• adding the Publish Code Coverage pipeline task to the pipelines YAML file

I am pushing a PR to address this. Please let me know in case something needs to be improved.

[rishavsharan]

Closing issue as the PR has been merged