Feature/modernize

[Chris53897]

Hi. I made some changes to keep this good idea alive for newer symfony versions.
There is still some work left.

I have created a first draft for a demo.
https://github.com/Chris53897/ImageCropBundleDemo

I did not use the bundle before, so i would be glad for some input from you.
My main question is: How is the Crop saved?
I do not see andy save button.

Changelog:
Dropped Support for PHP < 8
Dropped Support for Symfony < 4.4
Add Support for Symfony 4,5,6
Started to add Unittests
Add the missing symfony components to composer
Changed directory /web/ to /public/ The default Folder for symfony 4 and symfony flex

[anacona16]

Hi @Chris53897 thanks for contributing to the this project, actually I do not use this bundle a long time ago.

I was checking your changes, there are a lot of updated files.

I will continue checking all the changes.

I will post a more technically explanation about how it works, but it will take some days, I'm stuck at work right now.

[Chris53897]

@anacona16 Thanks for the reply. Take your time, no need for hussle.