py: Consistently use st3m.run.run_app

docs/badge/programming.rst

python_payload/apps/audio_passthrough/__init__.py

python_payload/apps/demo_cap_touch/main.py

python_payload/apps/demo_imu/__init__.py

python_payload/apps/demo_melodic/__init__.py

python_payload/apps/demo_scroll/__init__.py

python_payload/apps/demo_worms/__init__.py

python_payload/apps/led_painter/__init__.py

python_payload/apps/nick/__init__.py

python_payload/apps/otamatone/__init__.py

python_payload/apps/tiny_sampler/__init__.py

python_payload/st3m/run.py