Improve the FindMKL.cmake

[Varun Agrawal]

Currently, the MKL cmake file does not work well and fails to find MKL despite correct installation. Preferably, we should be using Torch/Pytorch's FindMKL.cmake file since those work well on modern systems and have been tested.

[Varun Agrawal]

Please assign this to me.

[Frank Dellaert]

@varunagrawal I also added you as a PhD student, so you don't need to fork, you can just branch.

[Frank Dellaert]

@varunagrawal what’s the status? Change to wontfix if you’re no longer actively working on this.