[WIP] Upgrading to mink-extension 2.0

Trying to solve #9 

* [x] Fix composer errors with roboxt https://github.com/M6Web/roboxt/pull/3
* [x] Upgrading to mink-extension 2.0 
* [ ] Repair tests
you can now remove the custom remove as I merged https://github.com/M6Web/roboxt/pull/3