py: st4m -> st3m

python_payload/apps/cap_touch_demo.py

python_payload/apps/demo_worms4.py

python_payload/apps/harmonic_demo.py

python_payload/apps/melodic_demo.py

python_payload/apps/nick.py

python_payload/main.py

python_payload/main_st4m.py

python_payload/mypystubs/hardware.pyi

python_payload/st3m/__init__.py

python_payload/st3m/application.py

python_payload/st3m/goose.py

python_payload/st3m/input.py

python_payload/st3m/logging.py

python_payload/st3m/property.py

python_payload/st3m/reactor.py

python_payload/st3m/system.py

python_payload/st3m/ui/__init__.py

python_payload/st3m/ui/ctx.py

python_payload/st3m/ui/elements/__init__.py

python_payload/st3m/ui/elements/menus.py