Query value widgets: Now with animated GIFs

To add visual context to query value widgets in Datadog, users can now set custom background images using static or animated GIFs. This feature allows for instant and customizable visualization of metrics, enabling users to quickly identify trends and anomalies. Users can paste a link to a hosted image or GIF into the graph editor, selecting from a variety of options to customize their widget's appearance. With this new feature, Datadog aims to provide an engaging and interactive experience for its customers, enhancing the overall dashboard experience.