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/environment/environment.service.spec.ts

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