feat(Circuit): rework complet de Circuit

src/Circuit.java

@@ -0,0 +1,25 @@
+public class Circuit {
+	private final CircuitCell type;
+    private int value;
+
+	public Circuit(CircuitCell type)
+	{
+        this.type = type;
+		this.value = type.ordinal();
+    }
+
+	public Circuit(CircuitCell type, int value)
+	{
+        this.type = type;
+		this.value = value;
+    }
+    
+	public Circuit setValue(int value)
+	{
+		this.value = value;
+		return this;
+	}
+
+	public CircuitCell getType() { return type; }
+	public int getValue() { return value; }
+}