Try adding the following line to your robotInit() code after your shooter has been constructed:
Code:
LiveWindow.addActuator("Shooter", "Solenoid", shooter);
Deploy your program and put the driver station in "Test" mode instead of "Teleop" mode. This should give you a control to verify that you can operate the solenoid. If you don't see the control, that probably indicates there is an error (look in the console window of the DriverStation for a stack trace). If you see the control, but the solenoid doesn't respond, it indicates an electrical/physical issue.
Next, the code fragment you provided looks like it should work. However, it requires the operator to press and hold the buttons down in order to put the solenoid in the forward or reverse position. As soon as a button is released, the solenoid will go back to the off state - is that what you want it to do?