Create failures detector

[spolnik]

• we want to know if there are submissions which do not have corresponding results
• we want to know if there is submission which pollutes judge agents (and move it to separate flow) - like with System.exit (now fixed) where it stopped all agents as it was captured by all agents which stopped them ...
• we want to know if ranking sees actually all snapshots correctly

[oleksiyp]

I was doing syscall interception solution for one of such judges in university. It was fun. There is of course easier and ready to use ways to secure it