optimized id matching function

doesn't need to create a copy of the id

Signed-off-by: William Casarin <jb55@jb55.com>

damus/Shared/Utilities/InsertSort.swift

@@ -59,7 +59,7 @@ func insert_uniq_sorted_event(events: inout [NostrEvent], new_ev: NostrEvent, cm
     
     for event in events {
         // don't insert duplicate events
-        if new_ev.id == event.id {
+        if new_ev.id_matches(other: event) {
             return false
         }
         

nostrdb/NdbNote.swift

@@ -106,6 +106,14 @@ class NdbNote: Codable, Equatable, Hashable {
     var id: NoteId {
         .init(Data(bytes: ndb_note_id(note), count: 32))
     }
+    
+    var raw_note_id: UnsafeMutablePointer<UInt8> {
+        ndb_note_id(note.ptr)
+    }
+
+    func id_matches(other: NdbNote) -> Bool {
+        memcmp(self.raw_note_id, other.raw_note_id, 32) == 0
+    }
 
     var sig: Signature {
         .init(Data(bytes: ndb_note_sig(note), count: 64))