improve workflow for stepwise evaluation

[DamienGilliard]

This PR wants to merge small improvements on the workflow into the implement_pca branch

[DamienGilliard]

from meeting, two changes:

• Instead of setting the beam ID at the CAD_segmentation step, add a component that allows to only focus on a sub-selection of the assembly.
• with the history: output as datatree instead of dict. We can't do anything with a dict in gh