fix: update SupplierLedger model to use correct enum casing and adjust types

feat: enhance PosAccountsService to include inventoryBankAccount details in responses

refactor: modify PosService to return structured inventory and bank account data

chore: remove isSettled field from CreatePurchaseReceiptDto and adjust related logic

feat: add payments selection in SuppliersService for better payment tracking

chore: apply database migrations to adjust decimal types and enforce constraints

chore: create index on Pos_Accounts for improved query performance

feat: define Supplier and SupplierLedger models in Prisma schema for better data management

prisma/schema/bank.prisma

@@ -26,9 +26,7 @@ model BankAccount {
   deletedAt     DateTime? @db.Timestamp(0)
 
   branch                  BankBranch                @relation("Bank_Accounts_branchId_fkey", fields: [branchId], references: [id])
-  purchaseReceiptPayments PurchaseReceiptPayments[]
-  posAccounts             PosAccount[]
-  inventoryBankAccounts   InventoryBankAccount[]    @relation("Inventory_Bank_Accounts_bankAccountId_fkey")
+  inventoryBankAccounts   InventoryBankAccount[]
 
   @@map("Bank_Accounts")
 }