added sample .env for airflow-docker setup

added sample .env

updated architecture & added notebook version of databricks archive

deleted test scripts

containerized dbt project, updated markdown & scripts

updated airflow dockerfile & tested dbt docker image

added markdowns, updated data generation, spark streaming script

finalized the kafka docker file

updated kafka docker file

updated markdown, env variabe

updaing kafka setup related files

added few markdowns, updated terraform script & kafka docker file

added airflow files

added airflow docker file & updated markdowns

added markdown files & updated fact table