Add Binary Sensor to Snoo (#38014)

* Add Binary Sensor to Snoo

* combine safety clips

* Update snoo.markdown

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

---------

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

source/_integrations/snoo.markdown

@@ -2,6 +2,7 @@
 title: Happiest Baby Snoo
 description: Instructions on how to integrate Snoo into Home Assistant
 ha_category:
+  - Binary Sensor
   - Sensor
 ha_iot_class: Cloud Push
 ha_release: 2025.3
@@ -10,6 +11,7 @@ ha_codeowners:
   - '@Lash-L'
 ha_domain: snoo
 ha_platforms:
+  - binary_sensor
   - sensor
 ha_integration_type: integration
 ha_quality_scale: bronze
@@ -23,6 +25,12 @@ This integration follows standard integration installation. No extra steps are r
 
 {% include integrations/config_flow.md %}
 
+## Binary Sensors
+
+### Left and right safety clips
+
+States if the left or right safety clip is connected to the baby's swaddle.
+
 ## Sensors
 
 ### State