hitl▌

Human approval gates, form inputs, and branching in Airflow DAGs using deferrable operators. \n \n Four operator types: ApprovalOperator for approve/reject decisions, HITLOperator for multi-option selection with forms, HITLBranchOperator for human-driven task routing, and HITLEntryOperator for form data collection \n All operators are deferrable, releasing worker slots while awaiting human response via Airflow UI's Required Actions tab or REST API \n Supports optional features including custom n