Implement Motor Control Functionality

[yrlmanoharreddy]

Description:
Develop a module to control DC motors using the Pi4J library.

Tasks:

1. Include a circuit diagram and breadboard layout.
2. Integrate GPIO pin configuration for motor control. Like yml configurations
3. Create MotorHelper.java with methods for initialization, speed (PWM) control, and direction change.
4. Add direction control (forward/reverse).

Acceptance Criteria:

1. MotorHelper.java is implemented and functional.
2. GPIO pins are configured correctly with safety checks.
3. Motor speed can be set from 0% to 100% using PWM.
4. Direction can be changed reliably between forward and reverse.