`AnsiConsoleFactory` should be an internal static class. Creating an `IAnsiConsole` can be achieved through `Spectre.Console.AnsiConsole.Create(AnsiConsoleSettings)`
Since `AnsiConsoleFactory` is public, it can't be changed from a non static class to a static class so obsoleting it is the second best thing to do.
Eventually, when `AnsiConsoleFactory` becomes internal and static, `AnsiConsole.Create` can be simplified to this (and the private static field `_factory` can be removed)
```
public static IAnsiConsole Create(AnsiConsoleSettings settings)
{
return AnsiConsoleFactory.Create(settings);
}
```
* Moves ColorSystem from Profile to Capabilities
* Renames Tty to IsTerminal
* Adds IAnsiConsoleOutput to make output more flexible
Closes#343Closes#359Closes#369
This makes it possible for encoders to output better representation
of the actual objects instead of working with chopped up segments.
* IAnsiConsole.Write now takes an IRenderable instead of segments
* Calculating cell width does no longer require a render context
* Removed RenderContext.LegacyConsole
* Removed RenderContext.Encoding
* Added Capabilities.Unicode
