[FEATURE] added workflows to sales-dependency-class-interface

__Tasks:__

- [x] added getWorkflows to interface
- [x] pass entity instead of entity id to interface functions 
- [x] gather feedback

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | -
| Fixed tickets | -
| BC Breaks     | -
| Doc           | -