interpolate (#14123)

interpolate (#14123)

Summary:
Add support for interpolate and upsampling in weak_script mode.

Because the function parameters are overloaded, i had to add it as a builtin op. For interpolate:
size can be ?int | int[]?, and scale_factor can be ?float | float[]?. Every combination of the two parameters needs to be supported.

The same logic applies for upsample_nearest, upsample_bilinear, and upsample.

There are a few fixes that I came to along the way.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/14123

Differential Revision: D13278923

Pulled By: eellison

fbshipit-source-id: e59729034369be4ce4b747291a3d1c74e135b869