Describe the feature and motivation

QLinearSoftmax is an operator from domain com.microsoft, which is not part of the standard ONNX opset. We have SoftmaxInt8 implemented in https://github.com/opencv/opencv/blob/4.x/modules/dnn/src/int8layers/softmax_layer.cpp and QLinearSoftmax should be mapped to SoftmaxInt8, but there is no parser for QLinearSoftmax in the ONNX importer.

Model is attached here qlinearsoftmax.zip. Network arch is as below:

Additional context

No response