Auto-format received JSON payloads

[granxavi]

Hi guys,
To save bandwidth and device resources, many of us publish JSON payloads in a compact form (no whitespace/newlines). When monitoring messages in MQTTX, these compact payloads are harder to read.

It would be very helpful if MQTTX could automatically detect JSON payloads and offer an option to pretty-print them (with indentation and newlines) in the message viewer.

Thanks for considering it!
Edit: Sorry, I discovered that this is a feature already.