Added support of user apps patch

[symphony-soufiane]

Description

Added the support of user apps patch in ApplicationService.

Dependencies

N/A

Checklist

• [ ] Referenced a ticket in the PR title and in the corresponding section
• [x] Filled properly the description and dependencies, if any
• [x] Unit tests updated or added
• [x] Docstrings added or updated
• [x] Updated the documentation in docs folder