Fix kicker state machine

[PhiBabin]

The kicker state machine has some problems:

• The kick command does not "arm" the kick
• When the bank is full, the state machine switch back and forth between READY_TO_KICK and CHARGING.
• The timeout on ball wait is reset only when waiting for a ball and not in another state

[TwistedSim]

I'm not sure that the "is_charge" pin from the kicker is working.

[PhiBabin]

Should we put a timer? Is there a way to guest if the capacitor is charged?

[TwistedSim]

We should debug the ouput on the kicker. For the moment assume the capacitor charge in ~500ms