Spring integration that works without dependency

[l-1squared]

Currently the only way to bring spring together with JGiven is by inheriting from SpringScenarioTest (JUnit 5). This method goes against the very principle of spring and allows for heinous inheritance chains and overwrites.

Ideally one would be able to use springs bean wiring to get the individual stages to the test.

[l-1squared]

@leimer @codecholeric should we limit that feature to JUnit5?