Establish MQTT broker for Flotilla

[aeshub]

Describe the new feature you would like to see
The Flotilla application should have an associated MQTT broker/server which is responsible for streaming data from the different ISAR applications and robots on the facility to Flotilla. In addition, the broker should bridge to a fleet management broker to enable streaming at scale.

Describe the solution you'd like
This issue aims to get started with the MQTT broker for the Flotilla application. The bare minimum is adding an MQTT broker (https://www.hivemq.com/) which runs through a docker container and may be started together with the Flotilla application through docker compose.

How will this feature affect the current Threat Model?
The first iteration will only include a broker which is local to the Flotilla system and as such no data streaming out of the internal network.

• Authentication to the broker must be handled for all applications which should subscribe/publish
• Communication security must be handled when bridging to a fleet management broker (future task)

[aeshub]

[aeshub]

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