✨(backend) Add portability request feature

[qbey]

Purpose

This new feature will provide the instructors a way to ask for a portability to their playlist when possible.

Proposal

When accessing a resource from a direct URL from LTI:

When the resource does not exist

Same as before: we won't link the creating user to the new resource. (To be confirmed)

When the resource exists

To answer The Marsha owner of the resource is known, we need to determine whether:

• the resource belongs to a playlist with an organization with a user who can give access
• the resource belongs to a playlist with a consumer site whose organization has a user who can give access
• the resource belongs to a playlist with a user who can give access
• the resource belongs to a playlist created by a user

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• [x] Update portability requests associated to the user when a new association is created
• [x] Add portability request table
• [x] Add portability request API
• [x] Add portabliity request LTI frontend view for:
  • [x] Video / Document
  • [x] Classroom
  • [x] Markdown document
  • [x] Deposit