feat: implement bank accounts, branches, and banks modules with CRUD operations

- Added BankAccountsController, BankAccountsService, and related DTOs for managing bank accounts.
- Implemented BankBranchesController, BankBranchesService, and related DTOs for managing bank branches.
- Created BanksController and BanksService for retrieving bank information.
- Integrated Prisma for database operations across all modules.
- Added response mapping for consistent API responses.

prisma/schema/bank.prisma

@@ -0,0 +1,35 @@
+model BankBranch {
+  id        Int       @id @default(autoincrement())
+  name      String    @db.VarChar(255)
+  code      String    @unique() @db.VarChar(10)
+  address   String?   @db.VarChar(500)
+  createdAt DateTime  @default(now()) @db.Timestamp(0)
+  updatedAt DateTime  @updatedAt @db.Timestamp(0)
+  deletedAt DateTime? @db.Timestamp(0)
+  bankId    Int
+
+  bank         Bank          @relation("bank_branches", fields: [bankId], references: [id])
+  bankAccounts BankAccount[] @relation("Bank_Accounts_branchId_fkey")
+
+  @@map("Bank_Branches")
+}
+
+model BankAccount {
+  id            Int       @id @default(autoincrement())
+  accountNumber String?   @unique @db.VarChar(20)
+  cardNumber    String?   @unique @db.VarChar(16)
+  name          String    @db.VarChar(255)
+  iban          String?   @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")
+
+  @@map("Bank_Accounts")
+}