Add buttons for sleep timer to bluesound integration (#36438)

source/_integrations/bluesound.markdown

@@ -8,6 +8,7 @@ ha_iot_class: Local Polling
 ha_domain: bluesound
 ha_platforms:
   - media_player
+  - button
 ha_codeowners:
   - '@thrawnarn'
   - '@LouisChrist'
@@ -23,6 +24,36 @@ The `bluesound` platform allows you to control your [Bluesound](https://www.blue
 
 {% include integrations/config_flow.md %}
 
+## Buttons
+
+These are the available button entities:
+
+- `button.speaker_name_set_sleep_timer`: Setting a sleep timer.
+- `button.speaker_name_sleep_timer`: Clearing the sleep timer.
+
+Replace `speaker_name` with the name of your speaker.
+
+### Button `button.speaker_name_set_sleep_timer`
+
+Sets a timer that will turn off the speaker. For each time you call this it will increase the time by one step. The steps are (in minutes): 15, 30, 45, 60, 90, 0.
+If you increase an ongoing timer of for example 13 minutes, it will increase it to 15. If the timer is set to 90, it will remove the time (hence the 0).
+
+{% note %}
+This button is disabled by default.
+{% endnote %}
+
+### Button `button.speaker_name_clear_sleep_timer`
+
+Clear the sleep timer on a speaker, if one is set.
+
+{% note %}
+This button is disabled by default.
+{% endnote %}
+
+## Actions
+
+The Bluesound integration makes some custom actions available in addition to the [standard media player actions](/integrations/media_player/#actions).
+
 ### Action `bluesound.join`
 
 Group players together under a single master speaker. That will make a new group or join an existing group.
@@ -42,6 +73,10 @@ Remove one or more speakers from a group of speakers. If no `entity_id` is provi
 
 ### Action `bluesound.set_sleep_timer`
 
+{% note %}
+This action is deprecated. Use `button.<player_name>_set_set_timer` instead.
+{% endnote %}
+
 Sets a timer that will turn off the speaker. For each time you call this it will increase the time by one step. The steps are (in minutes): 15, 30, 45, 60, 90, 0.
 If you increase an ongoing timer of for example 13 minutes, it will increase it to 15. If the timer is set to 90, it will remove the time (hence the 0).
 
@@ -51,6 +86,10 @@ If you increase an ongoing timer of for example 13 minutes, it will increase it
 
 ### Action `bluesound.clear_sleep_timer`
 
+{% note %}
+This action is deprecated. Use `button.<player_name>_clear_set_timer` instead.
+{% endnote %}
+
 Clear the sleep timer on a speaker, if one is set.
 
 | Data attribute | Optional | Description                                                         |