Start contributing/samples/evaluation/, a family of single-concept samples that
demonstrate ADK evaluation through the `adk eval` CLI over one shared agent.
This first change adds the foundation shared by every sub-sample:
- home_automation_agent/: the shared agent (device-control tools) that all
sub-samples evaluate.
- README.md: an overview of the family and how each sub-sample is run.
Subsequent changes each add one single-concept sub-sample folder.
Co-authored-by: Haran Rajkumar <haranrk@google.com>
PiperOrigin-RevId: 952558506
Haran Rajkumar
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