added meta table to sql rep

justfile

mitm_tooling/definition/definition_tools.py

mitm_tooling/representation/df_representation.py

mitm_tooling/representation/sql_representation.py

mitm_tooling/transformation/sql/from_exportable.py

mitm_tooling/transformation/sql/from_sql.py

pyproject.toml

test/something.py

test/test_exportable_import.py

test/test_sql_rep.py

test/test_superset_definitions.py

test/test_to_df.py