Add scope flags

[agustinseifert]

It would be useful to have flags to parametrize the conversion scope.

Proposal

flag: --scope
values:

• c: class
• i: interface
• p: property
• m: method
• g: global variable + global constant + global function

usage example:
cdv --scope c+p

input:

export interface IFoo {
    doFoo(): void;
}

export class Foo implements IFoo {
    public name: string;
    public doFoo(): void {
    }
}

output:

namespace Codeverter
{
    public class Foo
    {
        public string Name { get; set; }
    }
}