Add XiCharacterInfo IPC opcode

I don't know what this is, I got the name from Sapphire.

resources/opcodes.json

@@ -473,6 +473,11 @@
             "name": "DistRetainerInfo",
             "opcode": 23,
             "size": 536
+        },
+        {
+            "name": "XiCharacterInfo",
+            "opcode": 22,
+            "size": 496
         }
     ],
     "ClientLobbyIpcType": [

src/ipc/lobby/mod.rs

@@ -203,6 +203,9 @@ pub enum ServerLobbyIpcData {
     /// Sent by the server to inform the client of their retainers.
     #[br(pre_assert(*magic == ServerLobbyIpcType::DistRetainerInfo))]
     DistRetainerInfo(DistRetainerInfo),
+    /// Unknown purpose
+    #[br(pre_assert(*magic == ServerLobbyIpcType::XiCharacterInfo))]
+    XiCharacterInfo { unk: [u8; 496] },
     Unknown {
         #[br(count = size - 32)]
         unk: Vec<u8>,