Get Provider by ID

GET /public/providers/prv_xxxxxxxxxxxxx

{
  "status": "success",
  "message": "Provider retrieved successfully",
  "data": {
    "id": "prv_xxxxxxxxxxxxx",
    "name": "Paystack",
    "slug": "paystack",
    "enabled": true,
    "createdAt": "2025-11-12T17:46:07.000Z",
    "updatedAt": "2025-11-12T17:46:07.000Z"
  }
}