feat: refactor storage module (#521)

* feat: refactor storage module

* fix: folder need to be kebab case

* fix: comment wrong auth

server/src/integrations/file-storage/file-storage.service.spec.ts

@@ -0,0 +1,25 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { FileStorageService } from './file-storage.service';
+import { STORAGE_DRIVER } from './file-storage.constants';
+
+describe('FileStorageService', () => {
+  let service: FileStorageService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [
+        FileStorageService,
+        {
+          provide: STORAGE_DRIVER,
+          useValue: {},
+        },
+      ],
+    }).compile();
+
+    service = module.get<FileStorageService>(FileStorageService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});