Moves the Joomla API tests to cypress and removes the whole codeception dependency. There is only one remaining system tests for the back end media manager. As these tests are not executed in drone they will be ported in a second step.
Beside that it renames the tests/cypress folder to tests/System to be more inline with Unit and Integration.
@dgrammatiko can you have a look here if the lint:testjs command can somehow be merged into the lint:js command? Thanks.