WIP: New split lib workflow

We need to:
- [ ] check that meta-analysis is still working
- [ ] finish preprocessing (split libs) connect per prep template
- [ ] make preprocessing async
- [ ] be able to connect to other studies raw data
- [ ] fix metadata summary per prep template
- [ ] add EBI submission
That is not a solution either for obvious reasons. What is a solution is to strongly advise that all developers be familiar with PEP-8 and, in addition, that developers do not blindly trust the build system as they are never perfect.