Add S3 uploading

[FledgeXu]

Goal

The goal of this PR is to add S3 uploading files support.

Abstract

• Add the worker container to dev compose.
• Add uploading file to S3 and delete file from S3 two functions.
• Add rq and pytest-mock.

[rgaudin]

Please don't push changes while in review

[FledgeXu]

My bad, I forgot to push yesterday ......

[FledgeXu]

Also please silence Codefactor as those are false positive (s3_key doesnt include user-provided data). I wonder if this is triggered by the variable name

I'm not quite sure how to please CodeFactor, do I need to change the function name?

For some reason, some times one of the dragged files is marked as successful in the UI while it hasn't been uploaded.

This may be caused by the frontend FileStatus and the backend is not synchronized, I need to update the frontend FileStatus and FileStatus related code

ValueError: File not found: 498aa35e-39a8-41d7-887d-240695a1de7e

I haven't encountered the error you mentioned, it looks like it's related to the connection of database?