Provide JUnit 5.8 test class orderer for efficient ordering of @TestProfile

[famod]

Description

As Quarkus "reboots" for each different @TestProfile, much time might be wasted if you have x > 1 QuarkusTests without a profile and y QuarkusTests with a profile (or any similar combination).

JUnit 5.8 comes with a global test class ordering feature that could be very helpful, in that with such an orderer we could sort non profile QuarkusTests to the beginning and QuarkusTests with profiles after that, in alphabetical order of the FQCN of the profile class.

Implementation ideas

https://junit.org/junit5/docs/5.8.0/user-guide/index.html#writing-tests-test-execution-order-classes

As agreed on Zulip, this orderer shouldn't be registered automatically but should be documented instead.

Ideally, the orderer should be extendable easily so that users can add some custom ordering logic.

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