Consistency between LogicValues and Logic

[mkorbel1]

Motivation

It's confusing that there's slice for Logic and getRange for LogicValues. Also, that Logic has width and LogicValues has length. These, and maybe some other areas, should be made more consistent to reduce confusion. In some cases, maybe both should have both options (e.g. slice and getRange might be more useful in different scenarios but to both), and in other cases one should probably be deprecated and eventually removed.

Desired solution

Consistency between LogicValues and Logic where possible.

Alternatives considered

Leave things inconsistent. Original motivation was that LogicValues acts like a List and Logic acts more like SystemVerilog, but that might not be the right approach.

Additional details

Open to other suggestions!