Add `effect` module with `ColorizedConsole`

[kubukoz]

Use cats-effect-std and base the implementation on std.Console.

trait ColorizedConsole[F[_]] {
  def println(s: ColorizedString): F[Unit]
  def print(s: ColorizedString): F[Unit]
  //TBD - error printing methods?
}

object ColorizedConsole {
  //TBD - should `conf` be implicit?
  def instance[F[_]: std.Console](implicit conf: ConfiguredColorize): ColorizedConsole[F] = ...
}

[kubukoz]

@iRevive this might be of interest to you (as well as #8) :)