Allow to define array of locator functions as a interactor's locator

For example, this is a locator of material-ui Button
https://github.com/thefrontside/interactors/blob/6454cc6caccbd12303a2d4776f399385c0e47c09/packages/material-ui/src/button.ts#L10
As you can see, buttons can be located by aria-label attribute and by innerText. But the problem is if we have a button with both aria-label and innerText values, we can't find that button by innerText value, because our locator return the first value from aria-label attribute.

So I suggest to add ability to define an array of functions as locator. So locator could be look like this:

.locator([
  (element) => element.getAttribute("aria-label"),
  (element) => element.innerText
])

And then you can find your button by any of these possible ways.

Start at packages/material-ui/src/button.ts#L10 and trace the interactor locator implementation used by the material-ui Button. Check how locator values are resolved and where locator behavior is tested. Done means an interactor can accept multiple locator functions, find a button through any matching value, and retain existing single-locator behavior.