Add BlueMaestro integration (#77758)

CODEOWNERS

homeassistant/components/bluemaestro/__init__.py

homeassistant/components/bluemaestro/config_flow.py

homeassistant/components/bluemaestro/const.py

homeassistant/components/bluemaestro/device.py

homeassistant/components/bluemaestro/manifest.json

homeassistant/components/bluemaestro/sensor.py

homeassistant/components/bluemaestro/strings.json

homeassistant/components/bluemaestro/translations/en.json

homeassistant/generated/bluetooth.py

homeassistant/generated/config_flows.py

requirements_all.txt

requirements_test_all.txt

tests/components/bluemaestro/__init__.py

tests/components/bluemaestro/conftest.py

tests/components/bluemaestro/test_config_flow.py

tests/components/bluemaestro/test_sensor.py