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/share/share.service.ts

@@ -56,6 +56,10 @@ export class ShareService {
       expirationDate = moment(0).toDate();
     }
 
+    fs.mkdirSync(`./data/uploads/shares/${share.id}`, {
+      recursive: true,
+    });
+
     return await this.prisma.share.create({
       data: {
         ...share,