DSE Project Model Redesign
- Support arbitrary combination of applications of DSE
- Keep consistent view on corresponding artifacts (initially imported or generated)
- Consistent constraints (and therefore also super sets)
- Use tree to represent artifacts and runs
- Create copies where needed (as naive alternative to model versioning)
- Do due the massive structural changes, the information contained in DSE projects with AF3 version <= 2.14 will not be migrated.
- Rather, a simple migrator that completely removes old DSE projects will be implemented. This is also assumed by the exploration-related changes performed in #3337.