Frontend interface

[eliassjogreen]

For Neo to become a truly awesome project we need a truly awesome programming experience, how do we do that? With a nice interface exposing backend-agnostic methods and operations.

I propose we take inspiration from projects like numpy, julia, matlab and tfjs.

For now I think the most important thing we need an interface for is ndarrays and different variations of the ndarray such as tensors and matrix.