[Search] Response needs to include validation errors

Validation errors section has been removed from Search service response and only returning a generic error, making the response useless as there is no detail on the error.

Current bahavior:

{
  "code": 400,
  "reason": "Bad Request",
  "message": "Invalid parameters were given on search request"
}

It needs to be:

{
  "code": 400,
  "reason": "Bad Request",
  "message": "Invalid parameters were given on search request",
  "errors": [
    "left corner and right corner are flipped: 110.0 vs. 100.0"
  ]
}