Add the video to the resources page of sparkplug

Created by: hassanjaber98

link to video:https://www.youtube.com/watch?v=4lunu8XBZqo tittle: Sparkplug Essentials 01 - Introduction to MQTT Sparkplug Desc: In this video series, we will introduce the industry-standard protocol MQTT Sparkplug. We will explain why it is different from other communication protocols, and how companies benefit from Sparkplug in their Industrial IoT use cases, making it one of the biggest trends in connectivity.