chore: add support for Laravel 10.x

[joostdebruijn]

Description

This PR adds support for Laravel 10.x.

Motivation and context

Laravel 10.x will be released in February and this change allows the package to be used with Laravel 10.x.

How has this been tested?

Tests has been adjusted to run the test suite against Laravel 10.x. As there is an ongoing problem with FakerPHP and random images (the webservice behind it is down and support for images will be removed in the next version of FakerPHP), a Factory has been added that generates an image with GD to make sure all tests will run.

Screenshots (if appropriate)

n/a

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

Go over all the following points, and put an x in all the boxes that apply.

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• [x] I have read the CONTRIBUTING document.
• [x] My pull request addresses exactly one patch/feature.
• [x] I have created a branch for this patch/feature.
• [x] Each individual commit in the pull request is meaningful.
• [x] I have added tests to cover my changes.
• [x] If my change requires a change to the documentation, I have updated it accordingly.

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