Add OAuth to Neato (#44031)

.coveragerc

homeassistant/components/neato/__init__.py

homeassistant/components/neato/api.py

homeassistant/components/neato/camera.py

homeassistant/components/neato/config_flow.py

homeassistant/components/neato/const.py

homeassistant/components/neato/manifest.json

homeassistant/components/neato/sensor.py

homeassistant/components/neato/strings.json

homeassistant/components/neato/switch.py

homeassistant/components/neato/translations/de.json

homeassistant/components/neato/translations/en.json

homeassistant/components/neato/vacuum.py

requirements_all.txt

requirements_test_all.txt

tests/components/neato/test_config_flow.py

tests/components/neato/test_init.py