Add basic EM endpoints #240
Description
As part of the effort to match legacy functionalities in full, EM endpoints (at least basic ones) should be added, alongside relevant testing. At the moment, I am focusing on implementing:
- FFT thumbnails
- Micrograph snapshots
- Movie data
Movies generally have some CTF/Motion correction data that is linked to them, more often than not in a 1:1 relationship, therefore I believe grouping and ordering them in one query could be sensible, as it makes pagination much easier in UI.
PS.: I have no permission to assign this issue to myself, add tags or create a branch, so the PR will have to be made from a fork