Fix ros spins no delay
- Several logs have been modified to give more information
- Ros spin_once with time.sleep(0.1) has been changed to ros.spin, and a timer of period 0.1 if needed.
- ASV_Node has been changed to allow a reentrant callback group instead of mutually_exclusive to avoid halts in synchronous execution (multithread executor is not needed).
- FSM_STATE is now published through a new topic '/ASV/FSM_STATE'
Edited by Alejandro Casado