🚀 feature request

Relevant Package

This feature request is for @angular/forms

Description

It will append validation to current validation that are in formControl.

Problem

Suppose in ngOnInit You have Validators.required on control, later you want to add Validators.min(0)
So you will use setValidators(Validators.min(0)) then required is removed.
So now you will have to append both
setValidators([Validators.required, Validators.min(0)]);

Describe the solution you'd like

addValidators(newValidator: ValidatorFn | ValidatorFn[] | null): void;
This will be like Array.push()

Describe alternatives you've considered