Separate SupportsIntegralOps into SupportsBitLogic and SupportsBitShifting (or something)

[posita]

We probably want to tease out &, |, ^, ~ into their own thing. There are enough primitives that support logical operators without supporting bit-shifting (e.g., enum.Flag).

[posita]

On second thought, let's not do this. First, enum.Flag doesn't support reverse operators (e.g., __rand__). Second, other things that do support logic operators generally have specialized approaches that aren't easily generalized (see, e.g., set). I think the best solution here is to leave bit logic and bit shifting operators coupled (which likely generally applies to number-like things), and let others create/compose their own for such special cases.