Add gree climate integration (#37498)

CODEOWNERS

homeassistant/components/gree/__init__.py

homeassistant/components/gree/bridge.py

homeassistant/components/gree/climate.py

homeassistant/components/gree/config_flow.py

homeassistant/components/gree/const.py

homeassistant/components/gree/manifest.json

homeassistant/components/gree/strings.json

homeassistant/components/gree/translations/en.json

homeassistant/generated/config_flows.py

requirements_all.txt

requirements_test_all.txt

tests/components/gree/__init__.py

tests/components/gree/common.py

tests/components/gree/conftest.py

tests/components/gree/test_climate.py

tests/components/gree/test_config_flow.py

tests/components/gree/test_init.py