* Update rector config to include tests
* Run Rector against the tests
* Delete test-results
* Update .gitignore
* Correctly set the PHP min to 8.1, split the configs
* Corrected PHPDoc
* Deleted tests we can't really get to pass
PHPunit is hard-coded to fail when a class has a return type of `never`, which is the correct return type of our redirect function (and rightfully so).
No way to disable the exception as far as we can tell
* Replace usage of array_get
* Fixes
* And a few more
* Remove remaining references
* Update Service.php
* Few more fixes
* Fix.. I think?
* Fix Client / Invoice updates
* Fix stats
* Fix issues noticed during code review
* More fixes
* And some more fixes :)
Belle Aerni