[input] Forward required, readOnly and autoFocus

[sakulstra]

wanted to use required, so i forwarded all props suggested in ticket.

Closes #12179

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not sure where to add the docs

[oliviertassinari]

@sakulstra Thanks! I'm going one step further by adding the required support to the Input component.

[mnemanja]

@sakulstra & @oliviertassinari ,

I'm on the version 1.4.1 but not able to pass the readOnly attribute through the TextField component nor the InputProps on the TextField component.

And when I've searched for the definition, neither of the two definitions, TextField.d.ts nor Input.d.ts have any mention of the readOnly property.