Changed prefect to a working version

Update README.md and Prefect version

Handle 0 row from query and adjust thr

Add model_name to filter query

Prepare for overall system testing

Add rrule scheduler and log more useful data

Add pyarrow to requirements.txt

Set default to get Prefect variables in the function header instead

Debug again

Debuf flow

Add data_drift_flow with Evidently

Deving Prefect worker

Initial commit