* Up/Down  Write a WidgetView GUI that has the following widgets:  a button labeled "go up/down" a label initialized to 0 (we'll call this the left label) a label initialized to 0 (we'll call this the right label) a button labeled "go down/up"  When the "go up/down" button is pushed, a random number between 1 and 10 (inclusive) is generated and added to the left label, and another random number between 1 and 10 (inclusive) is generated and subtracted from the right label.  When the "go down/up" button is pushed, a random number between 1 and 10 (inclusive) is generated and subtracted from the left label, and another random number between 1 and 10 (inclusive) is generated and added to the right label. */