* Lin quant ONNX operators

* Add EOL at EOF

* Update licence year

* Cleanup namespaces

* Add missing headers

* Check if group is correct

* Remove Check in dequantize

* Remove TODO

* Add converting zero point to data element type

* Remove unused scale variable

* Removing zero point

* Remove make_ng_conv_bias helper function

* Add test for Quantize Linear

* Remove dead code

* Add test for Dequantize Linear

* Add Quant Conv test

* Convert models to prototxt

* Remove artifact test

* Skip test on INTERPRETER

* Style check

* Remove stupid skipping

* Enable test skipping in onnx_backend tests

* Skip GPU tests on quantized operators

* Review fix