feat(battle-node): EngineIoFrame parse/encode for EIO3 packets

SVSim.BattleNode/Wire/EngineIoPacketType.cs

@@ -0,0 +1,12 @@
+namespace SVSim.BattleNode.Wire;
+
+public enum EngineIoPacketType
+{
+    Open = 0,
+    Close = 1,
+    Ping = 2,
+    Pong = 3,
+    Message = 4,
+    Upgrade = 5,
+    Noop = 6,
+}