Modules to hold error def and request/query def

src/error.rs

@@ -0,0 +1,9 @@
+//! Error handling.
+
+use std::result;
+use thiserror::Error;
+
+pub type Result<T, E = Error> = result::Result<T, E>;
+
+#[derive(Error, Debug)]
+pub enum Error {}

src/request.rs

@@ -0,0 +1 @@
+pub struct Request {}