feat: add redirect url plugin

[drodriguln]

The new Redirect URL plugin is used in conjunction with the dashboard / merchandising studio rule consequence "redirect to a url". It adds an item visually when a redirect matches, and a handler for onSubmit + onSelect to navigate to that URL.

See the RFC here.

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[Haroenv]

For me this looks good, but it requires reviews from other team members, as I've contributed too much of it.

[francoischalifour]

Wondering if it's worth providing the whole props here? It feels like just passing navigator solves one scenario, but not others when people will introduce different plugins?

[Haroenv]

I did debate when moving to pass only navigator that it could be interesting to pass the whole props, although as they probably would be spread, I guess it can wait until we have more need?

[francoischalifour]

We pass the state object without spreading so I would rather see the whole props object without spreading, no?

[Haroenv]

yes, I see the argument for all of props to be passed in a single object too. I guess I was more thinking on how that's currently not an API we expose, and from now on props would be available too.

[dhayab]

Great work! I have a few nitpicks that might help improve user experience.

[francoischalifour]

That's unconventional and not easy to understand why this is needed. Perhaps some JSDoc would help?

type DefaultIndicator = {
  /**
   * ...
   */
  __default?: boolean;
};

[francoischalifour]

In d5f8fc3:

Optional key on a function to indicate it's the default value of this function.

This doesn't explain what it's used for so it doesn't provide much value...