No entropy/information types

I noticed that Unitful has no 'Bit' type. While there is no way to represent a Bit in SI units it does indeed interact with physical quantities, such as kbit/s or landauer's limit Energy/Bit. There also exists a rich ecosystem of other scales to represent information such as nit or dit depending on the application.

This proposals opens the doors to more problems though. What about Bauds (symbols/s)?

Can i hear your thoughts on the issue?

The issue names no files, tests, or entry points. Start by reviewing Unitful.jl's existing unit and dimensionality model, then clarify whether information units and baud belong in scope; done requires an agreed design for Bit, related scales, and interactions such as kbit/s and energy per bit.

Written by the indexing model from the issue text.