391 add company picture attribut to jobs

[DipandaAser]

Update the post jobs offer handler to accept a new field for the company picture
Add a new handler to retreive the company picture

Why ?
To allow job poster to add their company image on thiers job post

How?
We have added an S3 self hosted object storage called minio

ROUTES:

• "/jobs" POST: post a job (ther_is a new field called company_image who take a base64 encoding of and image)
• "/jobs/{jobID}/image" GET: get the job company image
• "/jobs" GET: get the jobs list (in every job there is a field named has_image bool)

Steps to verify:
move to the backend folder with cd ./backend
run make start-postrges to run an initialized database
run make run to launch the api
run make e2etest to run the test

** Screenshots (optional)

[DipandaAser]

@rakici review needed

[elhmn]

This already looks great, I left few comments. I also think it would be great to add test for the image size if possible