Add Huum integration documentation (#30505)

* Add Huum integration documentation

* Fix comments regarding Huum documentation

* Fix note styling

* Fix huum typo

CODEOWNERS

@@ -338,6 +338,7 @@ source/_integrations/huisbaasje.markdown @dennisschroer
 source/_integrations/humidifier.markdown @home-assistant/core @Shulyaka
 source/_integrations/hunterdouglas_powerview.markdown @bdraco @kingy444 @trullock
 source/_integrations/hurrican_shutters_wholesale.markdown @starkillerOG
+source/_integrations/huum.markdown @frwickst
 source/_integrations/hvv_departures.markdown @vigonotion
 source/_integrations/hydrawise.markdown @dknowles2 @ptcryan
 source/_integrations/hyperion.markdown @dermotduffy

source/_integrations/huum.markdown

@@ -0,0 +1,32 @@
+---
+title: Huum
+description: Instructions on how to integrate a Huum saunas into Home Assistant.
+ha_category:
+  - Climate
+ha_release: 2024.2
+ha_iot_class: Cloud Polling
+ha_codeowners:
+  - '@frwickst'
+ha_domain: huum
+ha_config_flow: true
+ha_platforms:
+  - climate
+ha_integration_type: integration
+---
+
+Integrates [Huum](https://huum.eu/) saunas into Home Assistant.
+
+You’ll need your username (which is usually your email) and password to configure the integration.
+
+The integration takes the same security measures regarding an open sauna door as the Huum app.
+If the sauna door is open, the sauna will not turn on.
+
+<div class='note info'>
+
+When the sauna is off, you must turn on the sauna after setting the temperature.
+This is as a security measure so that one does not turn on the
+sauna by mistake.
+
+</div>
+
+{% include integrations/config_flow.md %}