feat(State.java): ajout classe State (Livrable 2)

src/State.java

@@ -0,0 +1,19 @@
+public class State
+{
+	public static enum Status
+	{
+		NORMAL;
+	}
+
+	private static Status current = Status.NORMAL;
+
+	public static Status get()
+    {
+        return current;
+    }
+
+	public static void set(Status status)
+    {
+        current = status;
+    }
+}