Writing a separate data dealer for online

[daurer]

The idea is that we write a standalone ZMQ service, which reads data on different ports from the Karabo device (in multiple threads) and fills a common Ringbuffer. Another thread is checking for complete events and is dealing those frames to the Hummingbird backend....

[daurer]

We decided to create this feature in a separate repo: https://github.com/FXIhub/exfelsync