Add Airflow Workflow

[cloudcheflabs]

Airflow is one of the popular workflows for data lakehouse. Airflow should support the following list:

• dynamical dag workflow deployment using git-sync sidecar container.
• support remote logging to s3.
• KEDA based worker autoscaling.

[cloudcheflabs]

https://github.com/cloudcheflabs/dataroaster/pull/19