[const] Add CONF_CLIMATE_ID for climate component sub-entities (#14764)

esphome/components/const/__init__.py

@@ -3,6 +3,7 @@
 CODEOWNERS = ["@esphome/core"]
 
 CONF_BYTE_ORDER = "byte_order"
+CONF_CLIMATE_ID = "climate_id"
 BYTE_ORDER_LITTLE = "little_endian"
 BYTE_ORDER_BIG = "big_endian"
 

esphome/components/pid/sensor/__init__.py

@@ -1,5 +1,6 @@
 import esphome.codegen as cg
 from esphome.components import sensor
+from esphome.components.const import CONF_CLIMATE_ID
 import esphome.config_validation as cv
 from esphome.const import CONF_TYPE, ICON_GAUGE, STATE_CLASS_MEASUREMENT, UNIT_PERCENT
 
@@ -21,7 +22,6 @@ PID_CLIMATE_SENSOR_TYPES = {
     "KD": PIDClimateSensorType.PID_SENSOR_TYPE_KD,
 }
 
-CONF_CLIMATE_ID = "climate_id"
 CONFIG_SCHEMA = (
     sensor.sensor_schema(
         PIDClimateSensor,