Auto-Close feature

[nsantos16]

Description

It will nice if we can add as a property of the hook the duration in milliseconds or false value to auto-close the toast.

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const { onOpen } = useToast(<CustomToast />, { autoClose: 500 });

in which:

• autoClose indicates the milliseconds that the toast will open when onOpen function invoked
• To default autoClose is false, this indicates that we need to invoke onClose to close the modal

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