feat: upload module (#486)

* feat: wip upload module

* feat: local storage and serve local images

* feat: protect against injections

* feat: server local and s3 files

* fix: use storage location when serving local files

* feat: cross field env validation

server/src/integrations/s3-storage/s3-storage.service.spec.ts

@@ -0,0 +1,25 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { S3StorageService } from './s3-storage.service';
+import { MODULE_OPTIONS_TOKEN } from './s3-storage.module-definition';
+
+describe('S3StorageService', () => {
+  let service: S3StorageService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [
+        S3StorageService,
+        {
+          provide: MODULE_OPTIONS_TOKEN,
+          useValue: {},
+        },
+      ],
+    }).compile();
+
+    service = module.get<S3StorageService>(S3StorageService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});