feat(pos): add favorite functionality for goods

- Implemented PosGoodFavoriteController to handle attaching and detaching favorites for goods.
- Created PosGoodFavoriteService to manage the business logic for favorites, including database operations and cache invalidation.
- Added PosGoodFavoriteModule to encapsulate the controller and service.

prisma/schema/consumer/consumers.prisma

@@ -11,11 +11,12 @@ model ConsumerAccount {
   account_id String  @unique()
   account    Account @relation(fields: [account_id], references: [id])
 
-  pos                Pos?
-  permission         PermissionConsumer?
-  account_allocation LicenseAccountAllocation?
-  sales_invoices     SalesInvoice[]
-  account_device     ConsumerAccountDevice?
+  pos                             Pos?
+  permission                      PermissionConsumer?
+  account_allocation              LicenseAccountAllocation?
+  account_device                  ConsumerAccountDevice?
+  sales_invoices                  SalesInvoice[]
+  consumer_account_good_favorites ConsumerAccountGoodFavorite[]
 
   @@map("consumer_accounts")
 }
@@ -150,3 +151,18 @@ model Pos {
 
   @@map("poses")
 }
+
+model ConsumerAccountGoodFavorite {
+  created_at DateTime @default(now())
+
+  consumer_account_id String
+  consumer_account    ConsumerAccount @relation(fields: [consumer_account_id], references: [id], onDelete: Cascade)
+
+  good_id String
+  good    Good   @relation(fields: [good_id], references: [id], onDelete: Cascade)
+
+  @@id([consumer_account_id, good_id]) // unique pair
+  @@index([good_id])
+  @@index([consumer_account_id])
+  @@map("consumer_account_good_favorites")
+}