Developer Tools list: add a visualisation section
Developer Tools list: add a visualisation section

Plus move some things (mobile, monitoring, visualisation) above less
popular ones ¯\_(ツ)_/¯

rabbitmq/rabbitmq-website,rabbitmq/rabbitmq-website,rabbitmq/rabbitmq-website,rabbitmq/rabbitmq-website,rabbitmq/rabbitmq-website