[hc8, mhz19] Moving constant CONF_WARMUP_TIME to const.py (#13392)

Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>

esphome/components/hc8/sensor.py

@@ -6,6 +6,7 @@ from esphome.const import (
     CONF_BASELINE,
     CONF_CO2,
     CONF_ID,
+    CONF_WARMUP_TIME,
     DEVICE_CLASS_CARBON_DIOXIDE,
     ICON_MOLECULE_CO2,
     STATE_CLASS_MEASUREMENT,
@@ -14,8 +15,6 @@ from esphome.const import (
 
 DEPENDENCIES = ["uart"]
 
-CONF_WARMUP_TIME = "warmup_time"
-
 hc8_ns = cg.esphome_ns.namespace("hc8")
 HC8Component = hc8_ns.class_("HC8Component", cg.PollingComponent, uart.UARTDevice)
 HC8CalibrateAction = hc8_ns.class_("HC8CalibrateAction", automation.Action)

esphome/components/mhz19/sensor.py

@@ -7,6 +7,7 @@ from esphome.const import (
     CONF_CO2,
     CONF_ID,
     CONF_TEMPERATURE,
+    CONF_WARMUP_TIME,
     DEVICE_CLASS_CARBON_DIOXIDE,
     DEVICE_CLASS_TEMPERATURE,
     ICON_MOLECULE_CO2,
@@ -18,7 +19,6 @@ from esphome.const import (
 DEPENDENCIES = ["uart"]
 
 CONF_AUTOMATIC_BASELINE_CALIBRATION = "automatic_baseline_calibration"
-CONF_WARMUP_TIME = "warmup_time"
 CONF_DETECTION_RANGE = "detection_range"
 
 mhz19_ns = cg.esphome_ns.namespace("mhz19")

esphome/const.py

@@ -1086,6 +1086,7 @@ CONF_WAKEUP_PIN = "wakeup_pin"
 CONF_WAND_ID = "wand_id"
 CONF_WARM_WHITE = "warm_white"
 CONF_WARM_WHITE_COLOR_TEMPERATURE = "warm_white_color_temperature"
+CONF_WARMUP_TIME = "warmup_time"
 CONF_WATCHDOG_THRESHOLD = "watchdog_threshold"
 CONF_WATCHDOG_TIMEOUT = "watchdog_timeout"
 CONF_WATER_HEATER = "water_heater"