[router] Add rustfmt and set group imports by default (#11732)

sgl-router/src/protocols/validated.rs

@@ -117,10 +117,11 @@ impl<T> std::ops::DerefMut for ValidatedJson<T> {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use serde::{Deserialize, Serialize};
     use validator::Validate;
 
+    use super::*;
+
     #[derive(Debug, Deserialize, Serialize, Validate)]
     struct TestRequest {
         #[validate(range(min = 0.0, max = 1.0))]