`AutoFillGroup` Control

[ndonkoHenri]

Closes #848

Test Code:

import flet as ft

def main(page: ft.Page):
    page.add(
        ft.AutoFillGroup(
            ft.Column(
                controls=[
                    ft.TextField(
                        label="Name",
                        autofill_hints=ft.AutoFillHint.NAME,
                    ),
                    ft.TextField(
                        label="Email",
                        autofill_hints=[ft.AutoFillHint.EMAIL],
                    ),
                    ft.TextField(
                        label="Phone Number",
                        autofill_hints=[ft.AutoFillHint.TELEPHONE_NUMBER],
                    ),
                    ft.TextField(
                        label="Street Address",
                        autofill_hints=ft.AutoFillHint.FULL_STREET_ADDRESS,
                    ),
                    ft.TextField(
                        label="Postal Code",
                        autofill_hints=ft.AutoFillHint.POSTAL_CODE,
                    ),
                ]
            )
        )
    )


ft.app(main)