Windup 210: Simplification of Classification and Hint

Not sure if you will like the classification simplification, it is quite hacky.
However, I seperated both simplification to two different commits.

Both of them are now able to use the "pass variableName from Iteration" simplification.
I think just `Hint.text("Migrate to JBoss JCA WorkManager").withEffort(8))` would be appropriate. 'having' seems a bit odd here.