docs: Update new information about middleware and bannable model database table

[ZhafranBahij]

Description

Update new information about middleware.

So, if I start in Laravel 11 or above, it doesn't have app/Http/Kernel. Because of that, I need to take an extra step to use this. And yeah, I found a way using Laravel Documentation and adapting it.

And then, I add how to use middleware using Laravel 11 or above in this README.md

Add new information in Bannable model database table

After create 'banner_at' column in migration, someone will instinctively use php artisan migrate. However, if someone forget to use php artisan migrate, I think include php artisan migrate step make more clear.

Update table contents

I guess, maybe someone need new table contents. In this new version, it include more information.

Note

If you read this, thank you very much. And I hope it'll help more people to use Laravel Ban by cybercog