adicionar enum utilizado para o commit anterior

pitiupi/src/pitiupi/net/tcp/SysInfoType.java

@@ -0,0 +1,9 @@
+package pitiupi.net.tcp;
+
+public enum SysInfoType {
+    CONNECTION_REJECTED,
+    RECEIVER_NOT_FOUND,
+    MESSAGE_REJECTED,
+    INTERNAL_ERROR,
+    CONNECTION_CLOSED,
+}