Add services main folder + histogram server binary w/o FairMQ

Runs and pop the server but:
- Input interface not defined! Something need to be invented to replace FairMQ
- Commands do not work as the static boolean accessed by CLING do not seem to be share to the main threads (worked in FairTask world)
- Due to this, no mechanism to stop the main loop apart from Ctrl+C
- Not tested with histos, neither with canvases