Add Linx virtual motionblinds integration docs (#37255)

source/_integrations/linx.markdown

@@ -0,0 +1,22 @@
+---
+title: Linx
+description: Connect and control your Linx devices using the Motionblinds integration
+ha_category:
+  - Cover
+ha_domain: linx
+ha_integration_type: virtual
+ha_supporting_domain: motion_blinds
+ha_supporting_integration: Motionblinds
+ha_release: 2025.2
+ha_codeowners:
+  - '@starkillerOG'
+ha_config_flow: true
+ha_platforms:
+  - button
+  - cover
+  - sensor
+ha_iot_class: Local Push
+ha_dhcp: true
+---
+
+{% include integrations/supported_brand.md %}