Remove Websocket application to merge it in the Core

[lunika]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe.

The websocket application is highly couple with the Video model and its usage. Creating a new application was not a so good idea. I think we should merge it in the Core application.

Describe the solution you'd like

Analyze if the whole application should be merged or only the consumer.