better parse pydantic validation errors

[russbiggs]

specifically in v3 we have must more validation set for query parameters but with pydantic v2 the behavior has changes in how its returns the validation error when serving a 422 e.g.

https://api.openaq.org/v3/locations?limit=100000

will return:

{
    "detail": [
        {
            "type": "less_than_equal",
             "loc": [
                 "query",
                 "limit"
              ],
             "msg": "Input should be less than or equal to 1000",
             "input": 100000,
             "ctx": {
                 "le": 1000
              },
             "url": "https://errors.pydantic.dev/2.1.2/v/less_than_equal"
       }
   ]
}

Most of the content is informative but coudl likely be better parsed and displayed for users in a way that does not expose the underlying pydantic implementation