Accessing `Http.Error` with task requests

[dullbananas]

task doesn't appear to provide any way of getting Http.Error values when errors occur.

[choonkeat]

https://github.com/elm/http/blob/34a9a27411c2492d3e247ac75cd48e22b473bef5/src/Http.elm#L538-L543

important values like response body when http status != 2xx and http headers are not stored in the Http.Error values at all

Alternatives are

• https://package.elm-lang.org/packages/jzxhuang/http-extras/latest/Http-Detailed#Error

  type Error body
      = BadUrl String
      | Timeout
      | NetworkError
      | BadStatus Http.Metadata body
      | BadBody Http.Metadata body String

• https://package.elm-lang.org/packages/choonkeat/elm-ext-http/latest/Ext-Http#Error

  type Error a
      = BadUrl String
      | Timeout
      | NetworkError
      | BadStatus Http.Metadata a
      | BadJson Http.Metadata a Json.Decode.Error