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/schema.prisma

@@ -0,0 +1,9 @@
+generator client {
+  provider     = "prisma-client"
+  output       = "../../src/generated/prisma"
+  moduleFormat = "cjs"
+}
+
+datasource db {
+  provider = "mysql"
+}