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
This entire function can actually be removed. If it's not supposed to have a post, get, head, or pull response you can just leave off the function and it will auto-raise a 405 error when someone tries to access it.