Helm: NFR add support to execute helm commands

[manusa]

Description

The main aim of JKube is to support most Helm operations without the need to download or use the helm CLI tool.

However, there are some operations that are only available through the usage of the client.

Provide the required architecture to be able to execute arbitrary helm commands.
We should also download the helm executable for the current platform so we make sure we're running a compatible CLI binary.

Note

We should download a specific CLI binary that we are sure works with JKube.
We should not rely on the user's PATH binary, or at most rely on this as a fallback.

2024-02-01 Update

After successful initial tests with https://github.com/manusa/helm-java, we can leverage this tool for the initial preview phase of the new Helm-related goals and tasks.

Required GitLab issues:

• https://gitlab.eclipse.org/eclipsefdn/emo-team/iplab/-/issues/13042
• https://gitlab.eclipse.org/eclipsefdn/emo-team/iplab/-/issues/13043
• https://gitlab.eclipse.org/eclipsefdn/emo-team/iplab/-/issues/13044

Once the IP due diligence is ready, we can add the dependency to the project:

/jkube-kit/parent/pom.xml

      <dependency>
        <groupId>com.marcnuri.helm-java</groupId>
        <artifactId>helm-java</artifactId>
        <version>${version.helm-java}</version>
      </dependency>

/pom.xml

    <version.helm-java>0.0.3</version.helm-java>

[manusa]

See current work on https://github.com/manusa/helm-java.

This provides native access to the Helm CLI library without the need for a Helm CLI.
By using this API we should be able to comply with this NFR and be able to provide any missing functionality for our Helm feature-set.