Add strip option

Include features of Intervention Image 3.7.0 (#4)

* Update intervention/image base version

* Change dependency version for testing

* Add support for config options

* Update Intervention Image version

* Update readme

Allow using library with Symfony 6.4 LTS (#3)

Co-authored-by: Alexander Grimalovsky <alexander.grimalovsky@gmail.com>

Add .gitattributes

Add symfony link

Add github related files