Add appendTo input to go-select

[jaredami]

Closes #246

Currently, making a selection on a go-select within a go-modal causes the modal to close. Sometimes we might desire that the go-modal remain open until a submission button is clicked, for instance.

By adding an appendTo input to our go-select and passing it to the appendTo input of the contained ng-select, we can make it so that a go-modal will remain open upon making a selection to a go-select within it using appendTo="'body'".

Example:

openModal(): void {
    this.goModalService.openModal(
      GoSelectComponent,
      {
        appendTo: 'body',
        bindLabel: 'name',
        bindValue: 'value',
        control: this.select10,
        items: this.items,
        label: 'Favorite Candy',
      }
    );
  }

[grahamhency]

@jaredami just a comment on this one, looks pretty good so far.

[eligolding]

@jaredami Sorry for commenting on something so old, but just wanted to bring up that this solution introduces other issues. I am experiencing both of these issues that others have had with ng-select: ng-select/ng-select#1130 and ng-select/ng-select#929. The real solution will need to involve fixing the modal not to close, which @patryk0605 may have fixed here: #410

[jaredami]

@eligolding Gotcha. Thanks for filling me in 👍

[IoSono000]

Hi, i continue to have the same problem. If I insert the component in a simple html page no problem, but if I insert it in a more complex context, the problem remains ...