Identify the UC identification template

Summary

Currently, all of our use cases are identified as UC-DPPS-XXX

What is the expected correct behavior?

We should provide a unique identifier to each UC for easy tracking/linking. Proposal: UC-DPPS-CP-XYZ, where:

• CP stands for Calibration Pipeline
• X corresponds to the high-level UC block:
  • X = 1: Atmospheric calibrations
  • X = 2: Telescope calibrations
  • X = 3: Array calibrations
  • ...
• Y corresponds to next-level decomposition, e.g.
  • Atmospheric Calibrations/Molecular Atmosphere block ==> X=1, Y=1
  • Telescope Calibrations/Optical Throughput block ==> X=2, Y=1
• Z corresponds to UC number in the low-level block, e.g.
  • UC-DPPS-CP-111 corresponds to Atmospheric Calibrations/Molecular Atmosphere/MACOBAC

Related issues

Extends #51 (closed), #52 (closed)