error_code enum

[OlivierLDff]

Hi, i started to use your project.
Why isn't there any enum for common error?

enum error_code {
    parse_error = -32700,
    invalid_request = -32600,
    method_not_found = -32601,
    invalid_params = -32602,
    internal_error = -32603,
  };

Have a nice day!

[cinemast]

Good question. I will add one.

[cinemast]

Thanks for the idea.