Allow for use of \r\n in description without shoving default value to newline

[EricZimmerman]

with something like this defined:

 new Option<string>(
                    "--json",
                    "Directory to save json representation to. Use --pretty for a more human readable layout"),
                
new Option<bool>(
    "--pretty",
    getDefaultValue:()=>false,
    "When exporting to json, use a more human readable layout\r\n"),

the output looks like this:

it would be nice to define "groups" of options which i have done in the past with other parsers using \r\n, but it seems that when a default value exists, its added after the description.

maybe an extension method for adding the line feed or similar would help, unless there already is an easy way to do this?

another option would be to turn OFF the ability to auto include the default, which then lets me set it directly in the Description (this is how i used to do it).