Hour counters

[everycook]

Every industrial machine has it. for a cooker it may be a bit overkill, but we are geeks, so we do it:

Create a file with counter values for:
-"hours on" counts the hours of the deamon running (should be pretty close to rpi runtime)
-motor hours
-heater hours

they can be saved in decimal values. so 4.5 hours are 4:30

the values should be updated regularly during operation. use the logsaveinterval. more often would be useless....