Create PostgrestResponse class

[phamhieu]

Feature request

Is your feature request related to a problem? Please describe.

Right now, the library returns a Future<Map<String, dynamic>> response object. It'll be more convenient for us to have a response with custom class.

Describe the solution you'd like

Follow postgrest-js, we want to have a response class as below:

class PostgrestError {
  String message;
  String details;
  String hint;
  String code;
}

class PostgrestResponse {
  PostgrestError error;
  int status;
  String statusText;
  dynamic body;
}

[duythien0912]

😆 I would like to take this issue too could you assign me ^^

[soedirgo]

@phamhieu This is a bit late but I think body should be data following supabase/supabase-js#32, body was only there for backward compat.

It's a bit of a nitpick, but will save us some work in the future if we want consistent format across languages.

[phamhieu]

Thanks @soedirgo for pointing that out. I will take care of it in the next refactor commit.