Enhancement request: allow passing of custom props to currentStep from CopilotStep.

Hey ya'll

I'd like to suggest an enhancement to the currentStep object/prop that gets passed to custom components like tooltipComponent and stepNumberComponent.

It would be great if we could allow passing in custom props from CopilotStep. A situation where this would be useful is when you have a customizable custom tooltip component like so:

const CustomToolTipComponent = ({
  isFirstStep,
  isLastStep,
  handleNext,
  handlePrev,
  handleStop,
  currentStep,
}) => (
  // ...
  <Button>{currentStep.toolTipButtonText}</Button>
);
// ...
copilot({
  tooltipComponent: TooltipComponent
})(RootComponent)

<CopilotStep
  order={1}
  name="hello"
  text="Custom button text"
  toolTipButtonText="Cool btn txt right"
>
...
</CopilotStep>

Looking at the source, I think a simple update to ConnectedCopilotStep when registering steps could allow a enhancement like this. Perphaps passing along the rest of the props like this would be a bad idea:

this.props._copilot.registerStep({
  name: this.props.name,
  text: this.props.text,
  order: this.props.order,
  target: this,
  wrapper: this.wrapper,
  ...this.props,
});

We could add a dedicated prop to CopilotStep named something like options woul d do the trick:

<CopilotStep
  order={1}
  name="hello"
  text="Custom button text"
  options={{ toolTipButtonText: "Cool btn txt" }}
>

this.props._copilot.registerStep({
  name: this.props.name,
  text: this.props.text,
  order: this.props.order,
  target: this,
  wrapper: this.wrapper,
  options: this.props.options,
});

Let me know what ya'll think and if ya'll are 👍 on this I'd be glad to put a PR together.

Start by locating ConnectedCopilotStep and the registration call shown in the issue, then trace how registered step data becomes the currentStep passed to tooltipComponent and stepNumberComponent. Decide how the proposed custom options should flow through without exposing unrelated props. Done means a CopilotStep can provide custom values that are available on currentStep, with coverage for the resulting behavior.