feat: client shows status code, if available, on error

Signed-off-by: Richard Zak <richard.j.zak@gmail.com>

client/src/lib.rs

@@ -262,7 +262,11 @@ impl MdbClient {
                 Ok(res.status().is_success())
             }
             Err(e) => {
-                error!("Error sending {file_name}: {e}");
+                let status: String = e
+                    .status()
+                    .map(|s| s.as_str().to_string())
+                    .unwrap_or_default();
+                error!("Error{status} sending {file_name}: {e}");
                 bail!(e.to_string())
             }
         }