GridSearchCV & RandomizedSearchCV GPU support

[napetrov]

Discussed in #2350

^{Originally posted by idkSeth March 8, 2025}
In order to offload to GPU, input data needs to be passed as dpctl.tensor.usm_ndarray as per the guide.

GridSearchCV and RandomizedSearchCV is not patched and when trying to use them with the input data as dpctl.tensor.usm_ndarray, an indexing error is raised.

Can searching be patched to allow for hyper-parameter searching on GPU/CPU with usm_ndarray?

[david-cortes-intel]

This is now solved on the dpctl side: IntelPython/dpctl#2128

Should be possible to use the classes from sklearn with sklearnex estimators and dpctl/dpnp arrays after version 0.21 of dpctl.