[const][animation][dfplayer] Extract CONF_LOOP to const (#16797)

esphome/components/animation/__init__.py

@@ -2,6 +2,7 @@ import logging
 
 from esphome import automation
 import esphome.codegen as cg
+from esphome.components.const import CONF_LOOP
 import esphome.components.image as espImage
 import esphome.config_validation as cv
 from esphome.const import CONF_ID, CONF_REPEAT
@@ -14,7 +15,6 @@ DEPENDENCIES = ["display"]
 MULTI_CONF = True
 MULTI_CONF_NO_DEFAULT = True
 
-CONF_LOOP = "loop"
 CONF_START_FRAME = "start_frame"
 CONF_END_FRAME = "end_frame"
 CONF_FRAME = "frame"

esphome/components/const/__init__.py

@@ -15,6 +15,7 @@ CONF_DRAW_ROUNDING = "draw_rounding"
 CONF_ENABLED = "enabled"
 CONF_IGNORE_NOT_FOUND = "ignore_not_found"
 CONF_LIBRETINY = "libretiny"
+CONF_LOOP = "loop"
 CONF_ON_PACKET = "on_packet"
 CONF_ON_RECEIVE = "on_receive"
 CONF_ON_STATE_CHANGE = "on_state_change"

esphome/components/dfplayer/__init__.py

@@ -1,6 +1,7 @@
 from esphome import automation
 import esphome.codegen as cg
 from esphome.components import uart
+from esphome.components.const import CONF_LOOP
 import esphome.config_validation as cv
 from esphome.const import CONF_DEVICE, CONF_FILE, CONF_ID, CONF_VOLUME
 
@@ -15,7 +16,6 @@ DFPlayerIsPlayingCondition = dfplayer_ns.class_(
 
 MULTI_CONF = True
 CONF_FOLDER = "folder"
-CONF_LOOP = "loop"
 CONF_EQ_PRESET = "eq_preset"
 CONF_ON_FINISHED_PLAYBACK = "on_finished_playback"