Add public endpoint to fetch system security questions

Description: Brief description of what needs to be implemented and why.

User Story: As a user I want to see a list of available security questions So that I can select one during registration or account recovery

Endpoint/Component: This section can be deleted if not applicable to this feature.

• Method: GET
• Path: /security-questions

Example Response:

[
  {
    "id": 1,
    "question": "What was the name of your first pet?"
  },
  {
    "id": 2,
    "question": "What is your mother’s maiden name?"
  },
]

Acceptance Criteria:

• Endpoint is publicly accessible (does not require authentication)
• Returns only question IDs and their text (no answers or sensitive data)
• Questions are fetched from system-configured seed data

Testing Requirements:

• Unit Tests: Ensure the service returns expected data structure
• Integration Tests: Validate the route returns correct data with proper status codes