Add PduId wrapper struct

Death to Vec<u8>

src/api/client_server/membership.rs

@@ -1372,7 +1372,7 @@ pub(crate) async fn invite_helper(
             )
         })?;
 
-        let pdu_id: Vec<u8> = services()
+        let pdu_id = services()
             .rooms
             .event_handler
             .handle_incoming_pdu(

src/api/client_server/search.rs

@@ -84,7 +84,9 @@ pub(crate) async fn search_events_route(
         if let Some(s) = searches
             .iter_mut()
             .map(|s| (s.peek().cloned(), s))
-            .max_by_key(|(peek, _)| peek.clone())
+            .max_by_key(|(peek, _)| {
+                peek.as_ref().map(|id| id.as_bytes().to_vec())
+            })
             .and_then(|(_, i)| i.next())
         {
             results.push(s);

src/api/server_server.rs

@@ -1622,7 +1622,7 @@ async fn create_join_event(
         .roomid_mutex_federation
         .lock_key(room_id.to_owned())
         .await;
-    let pdu_id: Vec<u8> = services()
+    let pdu_id = services()
         .rooms
         .event_handler
         .handle_incoming_pdu(