Implement interpolate function (inference only)

[shanmo]

Feature description

Implement interpolate

Feature motivation

Interpolation is helpful for downsampling/upsampling the feature maps

[antimora]

Perfect. I think this could be also used by Resize operator filed here: #510

[antimora]

I'll implementing a first version with bicubic using convolution needed for resize onnx operator.

[Luni-4]

Is someone currently working on this function?

[nathanielsimard]

I don't think so, feel free to assign yourself if you want :)

[dcvz]

@Luni-4 did you build this in the end?

[antimora]

@dcvz no it is done.

[Luni-4]

@dcvz

Nope, I do not have much time in this period, if you want to implement that, no problem for me

[antimora]

Implementation using transpose Conv in pytorch: https://gist.github.com/mjstevens777/9d6771c45f444843f9e3dce6a401b183