Add tests for blade directives And fix groupfeature directive

[thinkverse]

This PR adds tests for the blade directives. Tried testing @groupfeature directive but it keeps failing, stating "Exception: Property [features] does not exist on this collection instance", referring to the groupHasFeature method. Might be something to look into later.

laravel-feature-flags/src/Concerns/HasFeatures.php

Lines 151 to 154 in ece292c

	public function groupHasFeature(string $featureName): bool
	{
	return $this->groups->features->contains('name', $featureName);
	}

The added test will fail due to the die-dump in HasFeatures trait, but here's a screenshot of the test suite passing. 😀

[thinkverse]

Played around with it a bit more and fixed the @groupfeature directive by deferring the feature check to hasFeatureThroughGroup instead of checking with contains, so now all blade directive works correctly and all tests pass. 👍

[JustSteveKing]

Merging, tests are failing - but I need to rework on this package either way!

[thinkverse]

Due to the dd in HasFeatures trait yes, commented that out locally when running the test suite. 👍 Hopefully the tests I PR'ed will help during the refactoring. 🙂