add Save Text support and rework package

- move maze within package maze

java/org/artisanlogiciel/games/maze/Position.java

@@ -0,0 +1,58 @@
+package org.artisanlogiciel.games.maze;
+
+/** position of a cell with maze */
+public class Position
+{
+    private int x, y;
+    private int depth;
+
+    public Position(int x, int y, int depth)
+    {
+        this.x = x;
+        this.y = y;
+        this.depth = depth;
+    }
+
+    public Position(int x, int y)
+    {
+        this.x = x;
+        this.y = y;
+        this.depth = 0;
+    }
+
+    public int getX()
+    {
+        return this.x;
+    }
+
+    public int getY()
+    {
+        return this.y;
+    }
+
+    public int getDepth()
+    {
+        return depth;
+    }
+
+    public String toString()
+    {
+        return "(" + x + "," + y + ")" + "/" + depth;
+    }
+
+    public boolean equals(Object other)
+    {
+	// disregards depth
+	if (other instanceof Position )
+	    {
+		Position p = (Position) other;
+		return (p.getX() == x) && (p.getY() == y);
+	    }
+	else
+	    {
+		return false;
+	    }
+		
+		
+    }
+}