Migrate Thermostat and HVAC component to climate component (#2825)

.coveragerc

homeassistant/components/climate/__init__.py

homeassistant/components/climate/demo.py

homeassistant/components/climate/ecobee.py

homeassistant/components/climate/eq3btsmart.py

homeassistant/components/climate/generic_thermostat.py

homeassistant/components/climate/heatmiser.py

homeassistant/components/climate/homematic.py

homeassistant/components/climate/honeywell.py

homeassistant/components/climate/knx.py

homeassistant/components/climate/nest.py

homeassistant/components/climate/proliphix.py

homeassistant/components/climate/radiotherm.py

homeassistant/components/climate/services.yaml

homeassistant/components/climate/zwave.py

homeassistant/components/ecobee.py

homeassistant/components/homematic.py

homeassistant/components/nest.py

homeassistant/components/thermostat/zwave.py

homeassistant/components/zwave.py