tests: improve tests for ide

[Chris53897]

This helps the IDE (in my case PhpStorm) to read the code.
Please have a look if you find it useful and is correct.

[nikophil]

hi @Chris53897 thanks for your PR

IMO IDE-specific annotations should not land in the code.

[Chris53897]

I changed it and add the use statements.

PhpStorm does not yet understand it like this https://youtrack.jetbrains.com/issue/WI-55925.
I guess it can only understand it like this.
https://blog.jetbrains.com/phpstorm/2021/07/phpstorm-2021-2-release/#class-string

But maybe other ide's can understand it now. And hopefully phpstorm in the future

[nikophil]

PhpStorm does not yet understand it

I've tried your PR, and trying to "ctrl + click" createMany() in this code, and it works pretty well

// \Zenstruck\Foundry\Tests\Functional\RepositoryProxyTest

    public function can_find_random_object(): void
    {
        $this->categoryFactoryClass()::createMany(5);

[nikophil]

if PHPStorm does not understand it, we could change like this, maybe?

    /** @return class-string */
    abstract protected function categoryClass(): string;

    /** @return class-string<ModelFactory> */
    abstract protected function categoryFactoryClass(): string;