Account for test type, number of methods, and data providers in test ordering

Since this adds a bit of complexity, tried to tidy up the overall logic to make it more parseable at the same time.

This keeps the four kernel test jobs at around 2 minutes each while removing @group #slow from dozens of tests.

https://git.drupalcode.org/project/drupal/-/jobs/2553451
https://git.drupalcode.org/project/drupal/-/jobs/2553452
https://git.drupalcode.org/project/drupal/-/jobs/2553453
https://git.drupalcode.org/project/drupal/-/jobs/2553454

Went to review but needs a rebase

Rebased.

Note the weighting by test type doesn't affect core tests, but I'm hoping it will allow us to optimise contrib test run times/resource usage.

Drupal\Tests\image\Functional\ImageStylesPathAndUrlTest::testImageStyleUrlAndPathPrivateLanguage
Behat\Mink\Exception\ExpectationException: Current response status code is
403, but 200 expected.
/builds/project/drupal/vendor/behat/mink/src/WebAssert.php:888
/builds/project/drupal/vendor/behat/mink/src/WebAssert.php:145
/builds/project/drupal/core/modules/image/tests/src/Functional/ImageStylesPathAndUrlTest.php:315
/builds/project/drupal/core/modules/image/tests/src/Functional/ImageStylesPathAndUrlTest.php:113
FAILURES!

Appears random right?

Believe test failure is random.

Rebased here after a few more test optimisation issues landed and to try to get a clean pipeline. Most recent pipeline on the MR now is green and took 5m41s https://git.drupalcode.org/project/drupal/-/pipelines/274771