feat: add setting for default queue page size

schema.prisma

@@ -31,6 +31,7 @@ model Setting {
   queueAddResponseEphemeral      Boolean  @default(false)
   autoAnnounceNextSong           Boolean  @default(false)
   defaultVolume                  Int      @default(100)
+  defaultQueuePageSize           Int      @default(10)
   createdAt                      DateTime @default(now())
   updatedAt                      DateTime @updatedAt
 }