[const] Move CONF_TARGET_COUNT to components/const (#18120)

esphome/components/const/__init__.py

@@ -37,6 +37,7 @@ CONF_SCAN_PARAMETERS = "scan_parameters"
 CONF_SHA256 = "sha256"
 CONF_STATE_SAVE_INTERVAL = "state_save_interval"
 CONF_STOP_BITS = "stop_bits"
+CONF_TARGET_COUNT = "target_count"
 CONF_USE_PSRAM = "use_psram"
 CONF_VOC_INDEX = "voc_index"
 CONF_VOLUME_INCREMENT = "volume_increment"

esphome/components/ld2450/sensor.py

@@ -1,5 +1,6 @@
 import esphome.codegen as cg
 from esphome.components import sensor
+from esphome.components.const import CONF_TARGET_COUNT
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_ANGLE,
@@ -21,7 +22,6 @@ DEPENDENCIES = ["ld2450"]
 
 CONF_MOVING_TARGET_COUNT = "moving_target_count"
 CONF_STILL_TARGET_COUNT = "still_target_count"
-CONF_TARGET_COUNT = "target_count"
 
 ICON_ACCOUNT_GROUP = "mdi:account-group"
 ICON_ACCOUNT_SWITCH = "mdi:account-switch"

esphome/components/rd03d/sensor.py

@@ -1,5 +1,6 @@
 import esphome.codegen as cg
 from esphome.components import sensor
+from esphome.components.const import CONF_TARGET_COUNT
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_ANGLE,
@@ -19,8 +20,6 @@ from . import CONF_RD03D_ID, RD03DComponent
 
 DEPENDENCIES = ["rd03d"]
 
-CONF_TARGET_COUNT = "target_count"
-
 MAX_TARGETS = 3
 
 UNIT_MILLIMETER_PER_SECOND = "mm/s"