Microsocial dans irpp
Auto-entrepreneur
fc : prenom/birth
Fixinf cotsoc for fonction publique

Still some uncertainities for contractuel of fonction publique
Working on income inversion
Add taille_entreprise

We might want to (re)create the "taille entreprise" option for the
parameters.
TODO: adapt the code structure for taxes d'apprentissage, formation
professionnelle, effort à la construction => then merge with the current
param.xml file