Remove dependancy on ZMQ

**Describe the bug**
Remove dependancy on ZMQ as it delays builds and make it not possible to use Github actions to build ARMv6 docker images as it takes to long.

**To Reproduce**
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**Expected behavior**
Remove ZMQ and replace it with STOMP over websocket.

**Screenshots**
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**Environment info (please complete the following information):**
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**Additional context**
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