Added hasPreviousStep and hasNextStep to StepComponent

[Bird87ZA]

I've added functionality to be able to see if there are succeeding or preceding steps in the wizard.

This is useful because it allows you to have the following:

@if ($this->hasPreviousStep())
    <button wire:click="previousStep">
        {{ __('Back') }}
    </button>
@endif

@if ($this->hasNextStep())
    <button wire:click="nextStep">
        {{ __('Next') }}
    </button>
@else
    <button wire:click="submit">
        {{ __('Create') }}
    </button>
@endif

I do have some hardship though. I've tried testing it, but I can not get it working. I've added this to a 'parent' component that inherits from the StepComponent in my project, and have manually tested it. Assistance here will be appreciated - I've committed my approach to the test.

[freekmurze]

Since this PR does not have tests, I'm going to pass on it for now.

Add the functions to your own projects.

[Bird87ZA]

Hi Freek, appreciate the comment, but did you read my note? I tried adding tests, but it didn't work because I don't 100% understand how to make the tests work.

A pointer in what I could be doing wrong would be great.