Add Cirrus Link Solutions MQTT Engine to the list of compatible products

Hi.

Please add a tile to the list of compatible products in the software category for the following product:

• MQTT Engine v4.0.14

The Tile should point to https://cirrus-link.com/mqtt-software-for-iiot-scada/, and the image should be https://www.cirrus-link.com/wp-content/uploads/2019/01/MQTT-Engine-173-by-200-ICON-1.png

See the listing request from Cirrus Link solutions here: https://github.com/eclipse-sparkplug/sparkplug.listings/issues/5

The request has been validated and approved by Bryce Nakatani.