NXP backend: Add support for aten.conv_transpose2d.input (#15146)

### Summary
Adds quantization and conversion support for
`aten.conv_transpose2d.input` operator.

### Test plan
Added new unit tests that covers this feature.


cc @robert-kalmar @JakeStevens @digantdesai @roman-janik-nxp

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Co-authored-by: Roman Janik <[email protected]>

Author: StrycekSimon