Add Hive config flow (#47300)

* Add Hive UI

* Fix tests and review updates

* Slimmed down config_flow

* Fix tests

* Updated Services.yaml with extra ui attributes

* cleanup config flow

* Update config entry

* Remove ATTR_AVAILABLE

* Fix Re-Auth  Test

* Added more tests.

* Update tests

homeassistant/components/hive/const.py

@@ -0,0 +1,20 @@
+"""Constants for Hive."""
+ATTR_MODE = "mode"
+ATTR_TIME_PERIOD = "time_period"
+ATTR_ONOFF = "on_off"
+CONF_CODE = "2fa"
+CONFIG_ENTRY_VERSION = 1
+DEFAULT_NAME = "Hive"
+DOMAIN = "hive"
+PLATFORMS = ["binary_sensor", "climate", "light", "sensor", "switch", "water_heater"]
+PLATFORM_LOOKUP = {
+    "binary_sensor": "binary_sensor",
+    "climate": "climate",
+    "light": "light",
+    "sensor": "sensor",
+    "switch": "switch",
+    "water_heater": "water_heater",
+}
+SERVICE_BOOST_HOT_WATER = "boost_hot_water"
+SERVICE_BOOST_HEATING = "boost_heating"
+WATER_HEATER_MODES = ["on", "off"]