Add docs for new Touchline SL integration (#34441)

* Add docs for new Touchline SL integration

* Update source/_integrations/touchline_sl.markdown

* Update source/_integrations/touchline_sl.markdown

* Update source/_integrations/touchline_sl.markdown

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

* Update source/_integrations/touchline_sl.markdown

* Address review feedback

* use full integration name

---------

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>
Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

source/_integrations/touchline_sl.markdown

@@ -0,0 +1,29 @@
+---
+title: Roth Touchline SL
+description: Instructions on how to integrate Roth Touchline SL within Home Assistant.
+ha_category:
+  - Climate
+ha_release: 2024.9
+ha_iot_class: Cloud Polling
+ha_domain: touchline_sl
+ha_platforms:
+  - climate
+ha_integration_type: integration
+---
+
+The **Roth Touchline SL** climate integration enables you to control [Roth Touchline SL](https://www.roth-uk.com/products/control-systems/roth-touchliner-sl-wireless-system) underfloor heating systems.
+
+## Prerequisites
+
+You must have an account registered with the [Roth Touchline SL dashboard](https://roth-touchlinesl.com/login).
+
+{% include integrations/config_flow.md %}
+
+## Entities
+
+The integration will present each Roth Touchline SL zone as a climate entity, which can:
+
+- Display the current temperature
+- Display the current humidity
+- Set a target temperature
+- Assign to a configured "Global Schedule" using Home Assistant climate entity presets.