feat(falukant): add improve lover affection feature and localization updates

- Introduced the `improveLoverAffection` method in FalukantService to enhance relationship dynamics by allowing users to boost affection at a cost.
- Updated FalukantController and FalukantRouter to include the new endpoint for improving lover affection.
- Enhanced FamilyView component to provide a button for users to trigger the affection improvement action.
- Added localization entries for the new feature in multiple languages, ensuring clarity in user interactions regarding affection improvements.

backend/controllers/falukantController.js

@@ -119,6 +119,8 @@ class FalukantController {
         });
         this.setLoverMaintenance = this._wrapWithUser((userId, req) =>
             this.service.setLoverMaintenance(userId, req.params.relationshipId, req.body?.maintenanceLevel), { blockInDebtorsPrison: true });
+        this.improveLoverAffection = this._wrapWithUser((userId, req) =>
+            this.service.improveLoverAffection(userId, req.params.relationshipId), { blockInDebtorsPrison: true });
         this.createLoverRelationship = this._wrapWithUser((userId, req) =>
             this.service.createLoverRelationship(userId, req.body?.targetCharacterId, req.body?.loverRole), { successStatus: 201, blockInDebtorsPrison: true });
         this.spendTimeWithSpouse = this._wrapWithUser((userId) =>