chore(interoperability): add java - cpp sample

[jfonseca-aneo]

Motivation

PR aneoconsulting/ArmoniK.Extensions.Cpp#76 implements convention so Cpp workers
are able to execute tasks from other convention-conform SDKs, e.g.; java. This PR adds Java-Cpp interoperability example.

Description

• Java client that sends tasks to a Cpp worker
• Other minor changes: Enforce convention on System property keys.

Testing

Impact

Additional Information

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• I have thoroughly tested my modifications and added tests when necessary.
• Tests pass locally and in the CI.
• I have assessed the performance impact of my modifications.