Network refactoring for remoteconsole

[moritz-h]

Summary of Changes

• Use a single zmq socket for all connections (ZMQ_ROUTER) instead of the previously used two step connection startup. This simplifies the code, removes unnecessary threads and makes MegaMol a lot more firewall friendly, because no additional randomly chosen ports are used.

[geringsj]

While we are at it, we could also fix Issue #1114 and change the default port for host to something other than 33333

[moritz-h]

#1114 is not about changing the port, but changing the network socket to listen on any incoming connection instead of just on localhost. So setting host address to tcp://*:33333 instead of tcp://127.0.0.1:33333. This would make it way more convenient when the remote console just works. On the other hand this is a probably a pretty bad default state from security perspective. Opening a remote port, accepting any incoming connection (without any form of authentication) and allowing arbitrary lua code execution is probably not far from a security nightmare.
Maybe instead we just add the setting to the default config file, that you can just edit the config directly instead of must finding out the correct command every time. A little more work would be to add some basic password authentication to the remote console or some other security solution.
Maybe we should bring this up in the next team meeting as it is the classical convenience vs security design decision.