Port isort config from pre-commit to setup.cfg (#10557)
Port isort config from pre-commit to setup.cfg (#10557)

Based on https://github.com/apache/airflow/pull/10543#issuecomment-680231216
mistercrunch/airflow,bolkedebruin/airflow,lyft/incubator-airflow,Acehaidrey/incubator-airflow,mistercrunch/airflow,danielvdende/incubator-airflow,airbnb/airflow,apache/airflow,apache/airflow,apache/airflow,mistercrunch/airflow,nathanielvarona/airflow,apache/airflow,apache/incubator-airflow,sekikn/incubator-airflow,cfei18/incubator-airflow,nathanielvarona/airflow,mrkm4ntr/incubator-airflow,cfei18/incubator-airflow,DinoCow/airflow,airbnb/airflow,dhuang/incubator-airflow,mrkm4ntr/incubator-airflow,DinoCow/airflow,apache/airflow,apache/incubator-airflow,nathanielvarona/airflow,sekikn/incubator-airflow,Acehaidrey/incubator-airflow,Acehaidrey/incubator-airflow,mrkm4ntr/incubator-airflow,nathanielvarona/airflow,dhuang/incubator-airflow,lyft/incubator-airflow,sekikn/incubator-airflow,nathanielvarona/airflow,Acehaidrey/incubator-airflow,sekikn/incubator-airflow,lyft/incubator-airflow,bolkedebruin/airflow,danielvdende/incubator-airflow,airbnb/airflow,mrkm4ntr/incubator-airflow,DinoCow/airflow,cfei18/incubator-airflow,DinoCow/airflow,mistercrunch/airflow,airbnb/airflow,cfei18/incubator-airflow,lyft/incubator-airflow,Acehaidrey/incubator-airflow,bolkedebruin/airflow,apache/airflow,danielvdende/incubator-airflow,apache/incubator-airflow,cfei18/incubator-airflow,dhuang/incubator-airflow,danielvdende/incubator-airflow,apache/incubator-airflow,bolkedebruin/airflow,danielvdende/incubator-airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,bolkedebruin/airflow,dhuang/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow