Ability to extend ParameterJpqlGenerator without overriding

[godlewski-dm]

Currently processParameters method in io.jmix.data.impl.jpql.generator.ParameterJpqlGenerator is hardcoded to process PropertyCondition and JpqlCondition parameters. So when you create a custom io.jmix.core.querycondition.Condition implementation, the only way to add new process logic is to override ParameterJpqlGenerator and mark it @Primary in the app.

It would be better to be able to implement parameters processing in extension beans like io.jmix.data.impl.jpql.generator.ConditionGenerator implementations that allow to implement query and parameter value generation logic for each type of condition.

This might be useful to implement custom condition types in addons.