Require birthplace information when recording a new fireworks sale

Marked `lieuNaissance` as a required field in NewSaleForm and added validation.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 91318273-c764-4fd4-be04-bdc12c38af32
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/9d9e1107-c416-4124-a939-a91c612c56a1.jpg

client/src/lib/validation.ts

@@ -23,6 +23,7 @@ export function validateRequiredFields(formData: any): string[] {
     { key: 'nom', label: 'Nom' },
     { key: 'prenom', label: 'Prénom' },
     { key: 'dateNaissance', label: 'Date de naissance' },
+    { key: 'lieuNaissance', label: 'Lieu de naissance' },
     { key: 'modePaiement', label: 'Mode de paiement' },
     { key: 'typeIdentite', label: 'Type de pièce d\'identité' },
     { key: 'numeroIdentite', label: 'Numéro de pièce d\'identité' },