Add support for 10 micron MGPBox

[gnthibault]

Follow suggestion from this issue: mworion/MountWizzard4#151

In particular, this pyserial piece of code:

def toggle(): 

	import serial
	import time

	# This is the serial command to toggle 10Micron power
	pulseCommand = ':pulse,1500*\n'

	# Open port
	serialCon = serial.Serial(port=MGPBox, baudrate=38400)

	# Send pulse to relay
	time.sleep(2)
	serialCon.write(str.encode(pulseCommand))
	time.sleep(2)

	# Tell the user that we're done
	print('Toggled power to 10Micron Mount')

	# Close the port
	serialCon.close()