return more information when pydantic raise validation error

[vincentsarago]

ref #750

>> httpx -m POST http://127.0.0.1:8000/search -j '{"limit": "yo"}' 
{
    "detail": [
        {
            "type": "int_parsing",
            "loc": [
                "body",
                "limit"
            ],
            "msg": "Input should be a valid integer, unable to parse string as an integer",
            "input": "yo"
        }
    ],
    "body": {
        "limit": "yo"
    }
}

>> httpx -m GET http://127.0.0.1:8000/search\?limit\=yo
{
    "detail": [
        {
            "type": "int_parsing",
            "loc": [
                "query",
                "limit"
            ],
            "msg": "Input should be a valid integer, unable to parse string as an integer",
            "input": "yo"
        }
    ],
    "body": null
}

@drnextgis is that better ?

[drnextgis]

That is definitely much better!