[light] Add `initial_state` configuration (#7577)

tests/components/light/test.rp2040-ard.yaml

@@ -1,23 +1,3 @@
-esphome:
-  on_boot:
-    then:
-      - light.toggle: test_binary_light
-      - light.turn_off: test_rgb_light
-      - light.turn_on:
-          id: test_rgb_light
-          brightness: 100%
-          red: 100%
-          green: 100%
-          blue: 1.0
-      - light.control:
-          id: test_monochromatic_light
-          state: on
-      - light.dim_relative:
-          id: test_monochromatic_light
-          relative_brightness: 5%
-          brightness_limits:
-            max_brightness: 90%
-
 output:
   - platform: gpio
     id: test_binary
@@ -38,97 +18,4 @@ output:
     id: test_ledc_5
     pin: 5
 
-light:
-  - platform: binary
-    id: test_binary_light
-    name: Binary Light
-    output: test_binary
-    effects:
-      - strobe:
-    on_state:
-      - logger.log: Binary light state changed
-  - platform: monochromatic
-    id: test_monochromatic_light
-    name: Monochromatic Light
-    output: test_ledc_1
-    gamma_correct: 2.8
-    default_transition_length: 2s
-    effects:
-      - strobe:
-      - flicker:
-      - flicker:
-          name: My Flicker
-          alpha: 98%
-          intensity: 1.5%
-      - lambda:
-          name: My Custom Effect
-          update_interval: 1s
-          lambda: |-
-            static int state = 0;
-            state += 1;
-            if (state == 4)
-              state = 0;
-      - pulse:
-          transition_length: 10s
-          update_interval: 20s
-          min_brightness: 10%
-          max_brightness: 90%
-      - pulse:
-          name: pulse2
-          transition_length:
-            on_length: 10s
-            off_length: 5s
-          update_interval: 15s
-          min_brightness: 10%
-          max_brightness: 90%
-  - platform: rgb
-    id: test_rgb_light
-    name: RGB Light
-    red: test_ledc_1
-    green: test_ledc_2
-    blue: test_ledc_3
-  - platform: rgbw
-    id: test_rgbw_light
-    name: RGBW Light
-    red: test_ledc_1
-    green: test_ledc_2
-    blue: test_ledc_3
-    white: test_ledc_4
-    color_interlock: true
-  - platform: rgbww
-    id: test_rgbww_light
-    name: RGBWW Light
-    red: test_ledc_1
-    green: test_ledc_2
-    blue: test_ledc_3
-    cold_white: test_ledc_4
-    warm_white: test_ledc_5
-    cold_white_color_temperature: 153 mireds
-    warm_white_color_temperature: 500 mireds
-    color_interlock: true
-  - platform: rgbct
-    id: test_rgbct_light
-    name: RGBCT Light
-    red: test_ledc_1
-    green: test_ledc_2
-    blue: test_ledc_3
-    color_temperature: test_ledc_4
-    white_brightness: test_ledc_5
-    cold_white_color_temperature: 153 mireds
-    warm_white_color_temperature: 500 mireds
-    color_interlock: true
-  - platform: cwww
-    id: test_cwww_light
-    name: CWWW Light
-    cold_white: test_ledc_1
-    warm_white: test_ledc_2
-    cold_white_color_temperature: 153 mireds
-    warm_white_color_temperature: 500 mireds
-    constant_brightness: true
-  - platform: color_temperature
-    id: test_color_temperature_light
-    name: CT Light
-    color_temperature: test_ledc_1
-    brightness: test_ledc_2
-    cold_white_color_temperature: 153 mireds
-    warm_white_color_temperature: 500 mireds
+<<: !include common.yaml