Moved QONNX transformations to a new folder and moved activation handlers to their own file.

tests/transformation/test_qonnx_to_finn.py

@@ -43,10 +43,10 @@ from tempfile import TemporaryDirectory
 
 import finn.core.onnx_exec as oxe
 from finn.core.modelwrapper import ModelWrapper
-from finn.transformation.convert_qonnx_to_finn import ConvertQONNXtoFINN
 from finn.transformation.fold_constants import FoldConstants
 from finn.transformation.general import GiveUniqueNodeNames, RemoveStaticGraphInputs
 from finn.transformation.infer_shapes import InferShapes
+from finn.transformation.qonnx.convert_qonnx_to_finn import ConvertQONNXtoFINN
 from finn.util.test import get_test_model_trained