Installing sklearn-numba-dpex

[fcharras]

This issue to track progress on packaging sklearn-numba-dpex dependencies

Here's a list of targeted features: (most important first)

• users can install at least a working version with a single-line, single-package conda install
• latest versions of all dependencies in the tree are automatically available on conda right after release
• users can install at least a working version with a single-line, single-package pip install
• latest versions of all dependencies in the tree are automatically available on pip right after release

[fcharras]

Adding that the docker image we're using is currently fine but the dependency trees will be out of date at some point (e.g a new version of the oneapi basekit has been released but the corresponding python packages have not been bumped yet)