feat(21687): Add integration with Heap Analytics and user consent banner

See https://hivemq.kanbanize.com/ctrl_board/57/cards/21687/details/

The PR adds integration with the `Heap Analytics user journey tracking framework and a simple "Privacy Settings" consent form.

The integration relies on an application id defined for the app (a different id for production and development environments), to be tracked by Heap. The implementation expects this id to be provided through the VITE_MONITORING_HEAP environment variables.

Different strategies for open source or commercial installations must be investigated to provide the relevant application id to the app.

Design

The design of the "Privacy Settings" banner is strongly inspired by the HiveMQ website UI; information related to advertisements has been removed from the description (Edge doesn't have any!)
The "more information" link on the "Privacy Settings" banner links to https://www.hivemq.com/legal/imprint/
Consent is designed to be opt-in first:
- if the application id is not defined, tracking is not activated
- if the consent is not actively denied or granted (e.g. closing the privacy banner), consent is not recorded and tracking is not activated
- if the consent is denied, consent is recorded but tracking is not activated
- if the consent is granted, consent is recorded and tracking is activated
Consent is structured to support multiple frameworks and individual opt-in. The UI to see and edit these services is not yet implemented
Consent is stored in a localStorage key containing every supported tracked frameworks

After

screenshot-localhost_3000-2024 04 30-17_51_31

hivemq / hivemq-edge

feat(21687): Add integration with Heap Analytics and user consent banner #404

Design

After