suggest: Derive built-in traits for `Suggestion`.

components/suggest/src/lib.rs

@@ -39,6 +39,7 @@ pub struct RemoteSuggestion {
     pub click_url: Option<String>,
 }
 
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
 pub struct Suggestion {
     pub block_id: String,
     pub advertiser: String,