chore: reformat & clippy cleanup (#96)

Clippy is now added to the `check` in the pipeline

Co-authored-by: Ian Letourneau <letourneau.ian@gmail.com>
Reviewed-on: #96

opnsense-config-xml/src/data/haproxy.rs

@@ -1,4 +1,3 @@
-use rand;
 use rand::Rng;
 use xml::reader::XmlEvent as ReadEvent;
 use xml::writer::XmlEvent as WriteEvent;
@@ -14,7 +13,7 @@ impl YaDeserializeTrait for HAProxyId {
             ReadEvent::StartElement {
                 name, attributes, ..
             } => {
-                if attributes.len() > 0 {
+                if !attributes.is_empty() {
                     return Err(String::from(
                         "Attributes not currently supported by HAProxyId",
                     ));