feat(falukant): add scandalExtraDailyPct field and update related components

- Introduced a new field `scandalExtraDailyPct` in the relationship state model to track additional scandal risk per day, with validation constraints.
- Updated the FalukantService to include the new field in relevant calculations and data handling.
- Enhanced the frontend components, including RevenueSection and FamilyView, to display the scandal risk information and updated price calculations.
- Added localization entries for the new field in multiple languages to ensure clarity for users.

frontend/src/i18n/locales/fr/falukant.json

@@ -759,6 +759,7 @@
                 "visibility": "visibilité",
                 "discretion": "discrétion",
                 "maintenance": "Entretien",
+                "scandalExtraDailyPct": "Risque de scandale supplémentaire/jour",
                 "monthlyCost": "Coûts mensuels",
                 "politicalFreeSlotsHint": "Les bureaux politiques vous accordent {count} intérêts amoureux sans entretien mensuel (les relations les moins chères comptent en premier).",
                 "politicalFreeMaintenance": "Bureau (vacant)",