[resources] add link to tlukas.eu

docs/resources/3rdparty.md

@@ -4,6 +4,12 @@
 
 In this section, you will find links to third-party resources related to this project. We do not provide any guarantees regarding the availability of these resources, nor are we responsible for their content, quality, or any other aspect.
 
+### Czech
+
+- [SMS BRÁNA Z ANDROID TELEFONU / SMS GATEWAY FROM AN ANDROID PHONE](https://tlukas.eu/uvod/sms-brana-z-android-telefonu)
+
+  The article describes how to use an Android phone as an SMS gateway for sending SMS notifications from the monitoring tool [LibreNMS](https://www.librenms.org). 
+
 ### Vietnamese
 
 - *(Contains Ads)* [Turn your phone into an SMS Gateway to utilize as an OTP Sending Service](https://gettips200ok.netlify.app/2024/05/01/bien-dien-thoai-thanh-sms-gateway-tan-dung-lam-service-send-otp/)