Setting options and commands using lambda functions

[uttne]

1. Add option setting function.
2. Add command setting function.
3. Add option setting ignore function.
4. Add command setting ignore function.

[uttne]

lambda function sample.

var parser = new ArgsParser<MainCommand>();

parser.Option(x=>x.Name)
    .ShortName("n")
    .LongName("name")
    .Description("Name option description.");

[uttne]

lambda function overwrites attributes.

[uttne]

parser.SubCommand(x=>x.Hello)
    .Description("This command say hello.")
    .Option(y=>y.Name, o => 
    {
        o.ShortName("n");
        o.LongName("name")
            .Description("description.");
    })
    .Option(y=>y.Repeat, o => 
    {
        o.ShortName("r");
        o.LongName("repeat")
            .Description("description.");
    });

[uttne]

parser.SubCommand(x=>x.Hello, s=>
    {
        s.Description("This command say hello.")
            .Option(y=>y.Name, o => 
            {
                o.ShortName("n");
                o.LongName("name")
                .Description("description.");
            })
            .Option(y=>y.Repeat, o => 
            {
                o.ShortName("r");
                o.LongName("repeat")
                    .Description("description.");
            });
    });