Create modules,providers, services for bd

backend/src/db_providers/admin.providers.ts

@@ -0,0 +1,11 @@
+import { DataSource } from 'typeorm';
+import { Admin } from '../db.entity';
+import { adminRep, dataSource } from '../constants';
+
+export const adminProviders = [
+    {
+        provide: adminRep,
+        useFactory: (dataSource: DataSource) => dataSource.getRepository(Admin),
+        inject: [dataSource],
+    },
+];