Create test suite and CI pipelines

[walterddr]

currently pinot-dbapi as not test or CI pipelines.

propose to create a unit-test suite

• unit-test between sqlalchemy usage vs. direct query usage.
• executes with a docker run started pinot quickstart hybrid table (github even? or periodically generated real-time stream)
• CI will start with the docker pinot / local development requires either a minikube or start a local pinot (will improve test/context.py)