lock-free queue for interface to villas etc.

[m-mirz]

Could be based on this implementation:
https://moodycamel.com/blog/2013/a-fast-lock-free-queue-for-c++.htm

Requirements:

• provide lock-free communication between two threads in dpsim, independent of communication interface implementation
• C++ not C

[JTS22]

This is being worked on on branch lock-free-queue