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.

src/modules/banks/banks.service.ts

@@ -0,0 +1,15 @@
+import { Injectable } from '@nestjs/common'
+import { ResponseMapper } from '../../common/response/response-mapper'
+import { PrismaService } from '../../prisma/prisma.service'
+
+@Injectable()
+export class BanksService {
+  constructor(private prisma: PrismaService) {}
+
+  async findAll() {
+    const items = await this.prisma.bank.findMany({
+      select: { id: true, name: true, shortName: true },
+    })
+    return ResponseMapper.list(items)
+  }
+}