Document Airzone Select platform (#25569)

source/_integrations/airzone.markdown

@@ -5,6 +5,7 @@ ha_release: 2022.4
 ha_category:
   - Binary Sensor
   - Climate
+  - Select
   - Sensor
 ha_iot_class: Local Polling
 ha_config_flow: true
@@ -13,6 +14,7 @@ ha_platforms:
   - binary_sensor
   - climate
   - diagnostics
+  - select
   - sensor
 ha_codeowners:
   - '@Noltari'
@@ -62,6 +64,16 @@ For each Airzone zone (Thermostat) a *climate entity* is created.
 
 *Slave zones* can only enable/disable the current HVAC mode selected on the corresponding *parent zone*. Attempting to change the HVAC mode on a *child zone* will result on a Home Assistant error.
 
+## Select
+
+For each Airzone zone (Thermostat), the following *selects* are created:
+
+| Condition           | Description                        |
+| :------------------ | :--------------------------------- |
+| Cold Angle          | Grille angle for cooling.          |
+| Heat Angle          | Grille angle for heating.          |
+| Sleep               | Minutes for auto sleep.            |
+
 ## Sensors
 
 For the Airzone WebServer, the following *sensors* are created: