give semantical names to response members

src/response.rs

@@ -1,13 +1,19 @@
 /// Internal server response types
 pub enum Response<'a> {
-    /// Includes reference to the original request
-    AccessDenied(&'a str),
-    /// Includes query + server-side error description
-    InternalServerError(Option<&'a str>, String),
-    /// Includes reference to the original request
-    NotFound(&'a str),
-    /// Includes bytes array
+    AccessDenied {
+        query: &'a str,
+    },
+    InternalServerError {
+        query: Option<&'a str>,
+        error: String,
+    },
+    NotFound {
+        query: &'a str,
+    },
     File(&'a [u8]),
-    /// Includes query, list + is public root directory status
-    Directory(&'a str, String, bool),
+    Directory {
+        query: &'a str,
+        data: String,
+        is_root: bool,
+    },
 }