Akka-gRPC PoC [KVL-1120] - DO NOT MERGE

[hubert-da]

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Pull Request Checklist

• [ ] Read and understand the contribution guidelines
• [ ] Include appropriate tests
• [ ] Set a descriptive title and thorough description
• [ ] Add a reference to the issue this PR will solve, if appropriate
• [ ] Include changelog additions in one or more commit message bodies between the CHANGELOG_BEGIN and CHANGELOG_END tags
• [ ] Normal production system change, include purpose of change in description
• [ ] If you mean to change the status of a component, please make sure you keep the Component Status page up to date.

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