Checked for required channels in automove.py

[stephenlee91]

• Created a new helper function to check if the required channels in constantvariables.py exist
• If they do not exist when automove is called, open constantvariables.py and write into the file to set AUTO_MOVE_FLAG to False
• Print to console that required channels do not exist and that AUTO_MOVE_FLAG has been set to False
• Return to exit automove function without running the rest of it