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/interfaces/storage.interface.ts

@@ -0,0 +1,4 @@
+export enum StorageType {
+  S3 = 's3',
+  Local = 'local',
+}