Merge branch 'ajout-reforme-plf-pour-test-preprod' into 'master'

README.md

openfisca_france_reforms/contrefactuel_plf/__init__.py

openfisca_france_reforms/plf_plfss_2026/__init__.py

...s_2026/parameters/contribution_exceptionnelle/bareme.yaml

...fss_2026/parameters/contribution_exceptionnelle/taux.yaml

.../plf_plfss_2026/parameters/inflateurs/inflateur_bmaf.yaml

...plf_plfss_2026/parameters/inflateurs/inflateur_impot.yaml

...ca_france_reforms/plf_plfss_2026/parameters/pfu/taux.yaml

...rance_reforms/plf_plfss_2026/parameters/pfu/taux_rfr.yaml

pyproject.toml