Add Clockmender's Precision Drawing Tools v1.1.5

precision_drawing_tools/__init__.py

precision_drawing_tools/pdt_bix.py

precision_drawing_tools/pdt_cad_module.py

precision_drawing_tools/pdt_command.py

precision_drawing_tools/pdt_design.py

precision_drawing_tools/pdt_etof.py

precision_drawing_tools/pdt_functions.py

precision_drawing_tools/pdt_library.py

precision_drawing_tools/pdt_menus.py

precision_drawing_tools/pdt_msg_strings.py

precision_drawing_tools/pdt_pivot_point.py

precision_drawing_tools/pdt_view.py

precision_drawing_tools/pdt_xall.py