improved superset visualization definition generation architecture

mitm_tooling/definition/definition_representation.py

mitm_tooling/transformation/superset/__init__.py

...tooling/transformation/superset/asset_bundles/__init__.py

...ng/transformation/superset/asset_bundles/asset_bundles.py

mitm_tooling/transformation/superset/common.py

mitm_tooling/transformation/superset/definitions/__init__.py

mitm_tooling/transformation/superset/definitions/chart.py

..._tooling/transformation/superset/definitions/constants.py

mitm_tooling/transformation/superset/definitions/core.py

..._tooling/transformation/superset/definitions/dashboard.py

...tooling/transformation/superset/definitions/importable.py

...oling/transformation/superset/definitions/mitm_dataset.py

...ng/transformation/superset/definitions/post_processing.py

mitm_tooling/transformation/superset/exporting.py

mitm_tooling/transformation/superset/factories/chart.py

...ooling/transformation/superset/factories/custom_charts.py

mitm_tooling/transformation/superset/factories/dashboard.py

mitm_tooling/transformation/superset/factories/database.py

mitm_tooling/transformation/superset/factories/dataset.py

...tooling/transformation/superset/factories/mitm_dataset.py