Kubernetes Gradle Plugin's k8sHelm task can't pick maintainers, home, sources from project configuration

[rohanKanojia]

Description

While working on #1052 , I couldn't find any way to read the following properties in Helm Configuration from project configuration:

• Developers of a specific project: https://github.com/eclipse/jkube/blob/4848968450189305cec09c6aacaa658f12d50292/jkube-kit/resource/helm/src/main/java/org/eclipse/jkube/kit/resource/helm/HelmConfig.java#L53
• Source URL of project: https://github.com/eclipse/jkube/blob/4848968450189305cec09c6aacaa658f12d50292/jkube-kit/resource/helm/src/main/java/org/eclipse/jkube/kit/resource/helm/HelmConfig.java#L52
• Website URL of project: https://github.com/eclipse/jkube/blob/4848968450189305cec09c6aacaa658f12d50292/jkube-kit/resource/helm/src/main/java/org/eclipse/jkube/kit/resource/helm/HelmConfig.java#L51

These fields are usually found in project metadata which is available in pom.xml of a maven project. However, I wasn't able to find a place where these meta fields are specified in an equivalent grade project. Probably, there isn't any existing equivalent. For now, the user has to specify it explicitly in Gradle Groovy DSL configuration:

openshift {
    helm {
        sources = ['https://github.com/eclipse/jkube.git']
        home = 'https://www.eclipse.org/jkube'
        maintainers = [{
            name = 'John'
            email = 'john.doe@example.com'
        }]
    }
}

We need to check if there is way to search for these things in gradle configuration model and automatically read it while building up opinionated helm configuration.