[Chore](Exports) Add access to data_conversion functions

aidge_core/export_utils/__init__.py

@@ -4,4 +4,5 @@ from .export_registry import ExportLib
 from .scheduler_export import scheduler_export
 from .tensor_export import tensor_to_c, generate_input_file
 from .generate_main import generate_main_cpp, generate_main_compare_cpp
+from .data_conversion import aidge2c, aidge2export_type
 from .export_utils import remove_optional_inputs