FIX: App labels add in app clone

[vikramdevtron]

Description

this feature allow you to tag multiple tags to application, help you to categorize, and search your applications.

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Backend Api's tested

• Create App, with labels, without labels, empty labels etc.
• Edit labels on apps, add and remove labels.
• app meta info api.
• app clone.

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have tested it for all user roles