ComponentRenderer for Grid

[pleku]

When showing a grid to the users, I want them to be show them any component there without using html/templates, so that I can be efficient by using the high level APIs

Grid<Department> grid = new Grid<>();
grid.addColumn("Chief", Department::getPerson,
  new ComponentRenderer<>(PersonCard::new, PersonCard::setPerson));

public class PersonCard extends Div {
  private Person person;

  public PersonCard() {
    getElement().addListener("click",
      e -> System.out.println("You clicked " + person.getName()));
  }

  public void setPerson(Person person) {
    this.person = person;
    setText(person.getName());
  }
}

Please see the concept idea documentation for more information https://docs.google.com/document/d/1wS4lShVLix5Q97c3hANH33blHRYHtHFESeCotC8I7oE/edit#

[pleku]

Missing documentation moved to #2825