Add support for Shanda (Chinese) logins to the lobby server

This only means logging into the lobby server works, trying to login to
a World doesn't work as even the current version is too old. It probably
won't work without modifications anyway.

resources/opcodes.json

@@ -330,6 +330,11 @@
             "name": "LobbyCharacterAction",
             "opcode": 11,
             "size": 496
+        },
+        {
+            "name": "ShandaLogin",
+            "opcode": 6,
+            "size": 1456
         }
     ]
 }

src/bin/kawari-lobby.rs

@@ -107,6 +107,11 @@ async fn main() {
                                 ClientLobbyIpcData::LobbyCharacterAction(character_action) => {
                                     connection.handle_character_action(character_action).await
                                 }
+                                ClientLobbyIpcData::ShandaLogin { unk } => {
+                                    dbg!(unk);
+
+                                    connection.send_account_list().await;
+                                }
                                 ClientLobbyIpcData::RequestEnterWorld {
                                     sequence,
                                     content_id,

src/lobby/ipc/mod.rs

@@ -115,6 +115,12 @@ pub enum ClientLobbyIpcData {
         content_id: u64,
         // TODO: what else is in here?
     },
+    #[br(pre_assert(*magic == ClientLobbyIpcType::ShandaLogin))]
+    ShandaLogin {
+        #[bw(pad_size_to = 1456)]
+        #[br(count = 1456)]
+        unk: Vec<u8>,
+    },
 }
 
 #[binrw]