ajout de la gestion des favoris

prisma/schema.prisma

@@ -34,6 +34,7 @@ model User {
   reports           MessageReport[]
   ratings           Rating[]
   country           Country?                  @relation(fields: [countryId], references: [id])
+  favorites         Favorite[]
 }
 
 model Business {
@@ -82,6 +83,7 @@ model Business {
   conversations     Conversation[]
   offers            Offer[]
   ratings           Rating[]
+  favorites         Favorite[]
 }
 
 model BusinessCategory {
@@ -317,6 +319,17 @@ model Event {
   tags            String[] @default([])
 }
 
+model Favorite {
+  id         String   @id @default(uuid())
+  userId     String
+  businessId String
+  createdAt  DateTime @default(now())
+  user       User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  business   Business @relation(fields: [businessId], references: [id], onDelete: Cascade)
+
+  @@unique([userId, businessId])
+}
+
 enum RatingStatus {
   PENDING
   APPROVED