Add Katacoda scenario
The scenario is currently at https://www.katacoda.com/lachmanfrantisek/scenarios/introduction and generated from the repository lachmanfrantisek/incubator-katacoda.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
The scenario is currently at https://www.katacoda.com/lachmanfrantisek/scenarios/introduction and generated from the repository lachmanfrantisek/incubator-katacoda.