preliminary changes

MITM_SUPPORT_INFO.md

superset-frontend/package-lock.json

...ommands/mitm/external_service/exec_forwardable_request.py

...s/mitm/external_service/exec_forwardable_request_async.py

superset/commands/mitm/mitm_dataset/importers/v1/__init__.py

superset/commands/mitm/mitm_service/delete.py

superset/commands/mitm/mitm_service/download.py

superset/commands/mitm/mitm_service/get.py

superset/commands/mitm/mitm_service/upload.py

superset/commands/mitm/mitm_service/visualizations.py

...omization/external_service_support/forwardable_request.py

superset/customization/external_service_support/interface.py

...ization/external_service_support/service_call_handlers.py

...mization/external_service_support/service_call_manager.py

...ustomization/external_service_support/service_registry.py

superset/customization/mitm_datasets/api.py

superset/tasks/mitm/call_external_service.py

superset/tasks/mitm/execute_forwardable_request_async.py

tests/requests/http-client.env.json

tests/requests/mitm_dataset_api.http