Bug - Change to API Response

[guninwasan]

Description

Resolves #517

This PR focuses on standardizing the response format by replacing Response with APIResponse. This change ensures consistency in how API responses are structured and handled.

Key changes include:

• Replaced Response with APIResponse in def _wrapped_view to handle authentication and permission errors consistently (backend/core/api/public/decorators.py).
• Updated the delete_invoice_endpoint to use APIResponse for handling invoice deletion outcomes (backend/core/api/public/endpoints/Invoices/delete.py).
• Modified download to use APIResponse for handling PDF generation errors (backend/core/api/public/endpoints/Invoices/download_pdf.py).
• Updated edit_invoice_endpoint to use APIResponse for handling invoice editing outcomes (backend/core/api/public/endpoints/Invoices/edit.py).
• Changed get_invoices_endpoint to use APIResponse for handling invoice retrieval results (backend/core/api/public/endpoints/Invoices/get.py).
• Updated client_delete_endpoint to use APIResponse for handling client deletion outcomes (backend/core/api/public/endpoints/clients/delete.py).
• Modified system_health_endpoint to use APIResponse for handling system health check results (backend/core/api/public/endpoints/system_health.py).
• Updated webhook_task_queue_handler_view_endpoint to use APIResponse for handling webhook task outcomes (backend/core/api/public/endpoints/webhooks/webhook_task_queue_handler.py).

Checklist

• Ran the Black Formatter and
  djLint-er on any new code
  (checks
  will
  fail without)
• Made any changes or additions to the documentation where required
• Changes generate no new warnings/errors
• New and existing unit tests pass locally with my
  changes

What type of PR is this?

• 🐛 Bug Fix
• ♻️ Code Refactor

Added/updated tests?

• 🙅 no, because they aren't needed

Related PRs, Issues etc

• Related Issue bug: replace all API "Response()" with new "APIResponse()" #517
• Closes bug: replace all API "Response()" with new "APIResponse()" #517

[TreyWW]

Great work thank you, really appreciate it