Add config flow to Moon (#67444)

.strict-typing

CODEOWNERS

homeassistant/components/moon/__init__.py

homeassistant/components/moon/config_flow.py

homeassistant/components/moon/const.py

homeassistant/components/moon/manifest.json

homeassistant/components/moon/sensor.py

homeassistant/components/moon/strings.json

homeassistant/components/moon/translations/en.json

homeassistant/generated/config_flows.py

mypy.ini

tests/components/moon/conftest.py

tests/components/moon/test_config_flow.py

tests/components/moon/test_init.py

tests/components/moon/test_sensor.py