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/inventory.prisma

@@ -16,8 +16,6 @@ model Inventory {
   stockBalances          StockBalance[]         @relation("StockBalance_inventory")
   counterStockMovements  StockMovement[]        @relation("StockMovement_CounterInventory")
   stockMovements         StockMovement[]        @relation("StockMovement_Inventory")
-  bankAccountId          Int?
-  bankAccounts           BankAccount[]          @relation("Bank_Accounts_inventoryId_fkey")
   posAccounts            PosAccount[]           @relation("Inventory_PosAccounts")
   inventoryBankAccounts  InventoryBankAccount[] @relation("Inventory_Bank_Accounts_inventoryId_fkey")
 
@@ -71,7 +69,7 @@ model PosAccount {
   name          String    @db.VarChar(255)
   code          String    @unique() @db.VarChar(10)
   description   String?   @db.VarChar(500)
-  bankAccountId Int?
+  bankAccountId Int
   inventoryId   Int
   createdAt     DateTime  @default(now()) @db.Timestamp(0)
   updatedAt     DateTime  @updatedAt @db.Timestamp(0)