feat(stream): Initial support for auto-adapting streams

[epage]

This is the first step of #5.
This is only supporting AlwaysAnsi and Never and only using TTY and wincon information.

Future work

• Support wincon
• Optionally support degrading from truecolor -> 256 color -> 16 color, depending on the terminal

Areas of uncertainty

• Should we support all of the flags (nocolor, cli_colors, etc) or have users deal with that?
  • A part of me wants truecolor -> 256 color -> 16 adaption to be optional and have clap foist that on the palette chooser so we don't take that performance hit unnecessarily
• Should always_ansi call windows::enable_ansi_colors? Probably but then we'd need to make sure it doesn't get called twice in a row
• Do we need any kind of caching for our checks?

In doing this, I made println bypass one of the common pitfalls for CLI authors: the panic on broken pipe. This will instead let the application keep printing which is a better default.

Another CLI pitfall is the performance of using the non-locked version. This also means not having a println. I decided to go ahead and favor ergonomics and instead be very explicit in the documentation about this