assertContains added to the testing utils built into the Inertia assertion library

[JosephO1992]

Currently can't seem to find a way if an array on the Inertia object has a specific value.
For example:

$inertia->component('Test/Component')
->where('component.data.arrayToTest', function ($value) {
$value <----- this is where I'd like to put things like assertContains() on this array...
}

If anyone knows a way to do this, that'd be great, but otherwise this could be a useful feature in the future.