feat: add missing message handlers

src/message/server/wish_list_interval.rs

@@ -0,0 +1,21 @@
+use std::sync::mpsc::Sender;
+
+use crate::{
+    message::{Message, MessageHandler},
+    server::ServerOperation,
+};
+
+pub struct WishListIntervalHandler;
+
+// The server tells us the wishlist search interval.
+// This interval is almost always 12 minutes, or 2 minutes for privileged users.
+impl MessageHandler for WishListIntervalHandler {
+    fn get_code(&self) -> u8 {
+        104
+    }
+
+    fn handle(&self, message: &mut Message, _sender: Sender<ServerOperation>) {
+        let number = message.read_int32();
+        println!("Wishlist search interval: {} in seconds", number);
+    }
+}