ITVR Task - Add Feature: Legacy Application Deletion

[shayjeff]

Describe the task Create a feature to enable the deletion of legacy applications based on the presence of the "is_legacy" flag in the system. Purpose Allow the business area to independently manage legacy application deletions, reducing reliance on the development team. This streamlines, the process for handling requests related to legacy applications.

Acceptance Criteria

• [ ] Users with appropriate permissions can access the delete functionality.
• [ ] Only applications marked as legacy (with the "is_legacy" flag) can be deleted.
• [ ] A confirmation prompt is displayed before deletion to prevent accidental deletions.

Development Checklist (1) Make a new proxy model and ModelAdmin class (see admin.py) that gets the legacy applications, and implement the delete functionality; we'll probably also need additional HTML templates (see api/templates)

Additional context

• Consider providing training to the business area to familiarize them with the new deletion feature and its usage.

[kcabhar]

Hey team! Please add your planning poker estimate with Zenhub @emi-hi @JulianForeman @tim738745