refactor(inventories): restructure inventory and pos account modules, remove deprecated DTOs and controllers

- Removed create and update DTOs for inventory.
- Deleted inventories controller and service.
- Introduced new inventory bank accounts module with controller and service.
- Added new pos accounts module with controller and service.
- Updated Prisma models to reflect changes in bank account relationships.
- Adjusted PosAccount and SalesInvoice models for stricter type definitions.
- Implemented new response mapping for inventory and pos account services.

prisma/schema/bank.prisma

@@ -19,14 +19,13 @@ model BankAccount {
   accountNumber String?   @unique @db.VarChar(20)
   cardNumber    String?   @unique @db.VarChar(16)
   name          String    @db.VarChar(255)
-  iban          String?   @db.VarChar(34)
+  iban          String?   @unique @db.VarChar(34)
   branchId      Int
   createdAt     DateTime  @default(now()) @db.Timestamp(0)
   updatedAt     DateTime  @updatedAt @db.Timestamp(0)
   deletedAt     DateTime? @db.Timestamp(0)
 
   branch                  BankBranch                @relation("Bank_Accounts_branchId_fkey", fields: [branchId], references: [id])
-  inventories             Inventory[]               @relation("Bank_Accounts_inventoryId_fkey")
   purchaseReceiptPayments PurchaseReceiptPayments[]
   posAccounts             PosAccount[]
   inventoryBankAccounts   InventoryBankAccount[]    @relation("Inventory_Bank_Accounts_bankAccountId_fkey")