Inductance Meter Triggered solder Smock Remover

updated the code to be more efficient and removed the mathematical calculations that were slowing down the arduino.

Added new functionality that allows the coil to be connected to an external driving transistor instead of the Arduino GPIO pin, and the transistor type can be selected in the code.

1. Project Idealization              "done"
2. First prototype                     "done"
3. Initial Test                             "done"
4. Design Improvements        "in progress"
5. How-To-Guide                     "in progress"
6. Finish                                    (*_*)