feat: chunk uploads (#76)

* add first concept

* finished first concept

* allow 3 uploads at same time

* retry if chunk failed

* updated clean temporary files job

* fix throttling for chunk uploads

* update tests

* remove multer

* migrate from `MAX_FILE_SIZE` to `MAX_SHARE_SIZE`

* improve error handling if file failed to upload

* fix promise limit

* improve file progress

backend/src/main.ts

@@ -1,6 +1,7 @@
 import { ClassSerializerInterceptor, ValidationPipe } from "@nestjs/common";
 import { NestFactory, Reflector } from "@nestjs/core";
 import { NestExpressApplication } from "@nestjs/platform-express";
+import * as bodyParser from "body-parser";
 import * as cookieParser from "cookie-parser";
 import * as fs from "fs";
 import { AppModule } from "./app.module";
@@ -10,6 +11,7 @@ async function bootstrap() {
   app.useGlobalPipes(new ValidationPipe({ whitelist: true }));
   app.useGlobalInterceptors(new ClassSerializerInterceptor(app.get(Reflector)));
 
+  app.use(bodyParser.raw({type:'application/octet-stream', limit:'20mb'}));
   app.use(cookieParser());
   app.set("trust proxy", true);