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.module.ts

@@ -0,0 +1,19 @@
+import { Global, Module } from '@nestjs/common';
+import { EnvironmentService } from './environment.service';
+import { ConfigurableModuleClass } from './environment.module-definition';
+import { ConfigModule } from '@nestjs/config';
+import { validate } from './environment.validation';
+
+@Global()
+@Module({
+  imports: [
+    ConfigModule.forRoot({
+      isGlobal: true,
+      expandVariables: true,
+      validate,
+    }),
+  ],
+  providers: [EnvironmentService],
+  exports: [EnvironmentService],
+})
+export class EnvironmentModule extends ConfigurableModuleClass {}