Implement design for VAE-based reconstruction, e.g. CryoPoseNet

[ninamiolane]

• Start from CryoNetTorch:
  • 1️⃣ from JNP Martel's branch: has both fourier and real, but focus has been real space
    • Get sense of the logic of the modular structure
    • Decide which modules we want to keep (see Design task) -should use simSPI, once simSPI has been re-designed and refactored