Implement automatic regeneration procedure for visible camera

After reaching the maximum allowed cryocooler power, it will be necessary to regenerate the cryostat.
To do so, we have designed a turbo-pump-based regeneration procedure.
The sequence is based on automatic or remote controlled operations including :

• starting/stopping roughing, turbo and ion pumps
• opening/closing the gatevalve.
• stop/starting cryocooler

To speed up the process, the heater on the detector and spreader are used.

From a software pov, the main thread can be viewed as a sequence with:

• Steps with associated actions;
• Transitions with associated logic conditions

But there will be also other threads with asynchronous action in parallel.