core: Implement `Display` for `NavigationMethod`

core/src/backend/navigator.rs

@@ -3,6 +3,7 @@
 use crate::loader::Error;
 use crate::string::WStr;
 use indexmap::IndexMap;
+use std::fmt;
 use std::future::Future;
 use std::path::{Path, PathBuf};
 use std::pin::Pin;
@@ -40,6 +41,16 @@ impl NavigationMethod {
     }
 }
 
+impl fmt::Display for NavigationMethod {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let method = match self {
+            Self::Get => "GET",
+            Self::Post => "POST",
+        };
+        f.write_str(method)
+    }
+}
+
 /// A fetch request.
 pub struct Request {
     /// The URL of the request.