Abstract Pdu filter matching into trait Event.

Abstract Pdu unsigned accessors into trait Event.

Abstract Pdu relation related into trait Event.

Abstract PDU content into trait Event.

Move event_id utils from pdu to event.

Signed-off-by: Jason Volk <jason@zemos.net>

src/service/rooms/state/mod.rs

@@ -369,8 +369,8 @@ impl Service {
 		&self,
 		room_id: &RoomId,
 		shortstatehash: u64,
-		_mutex_lock: &RoomMutexGuard, /* Take mutex guard to make sure users get the room
-		                               * state mutex */
+		// Take mutex guard to make sure users get the room state mutex
+		_mutex_lock: &RoomMutexGuard,
 	) {
 		const BUFSIZE: usize = size_of::<u64>();