Give users the ability to send multiple picture at once

[Youllou]

Description :

Add a file list giving the users the ability to send multiple picture at once

Tasks :

• Add a picture list that shows each added picture
• Make it possible to delete a picture from the list
• Merge all picture in one before sending it (backend manage multiple files)

Acceptance Criteria :

• The pictures are easy to manage
• Selecting multiple pictures in the file opener makes all pictures available in the list
• Clicking on submit sends one request to the upload backend endpoint for each file then one request to the analyze endpoint