mainly documentation

• version corrected
• found and suppressed another few nanosleeps, replace with chrono
• OPCUA-2584: rx/tx counting in the handler, for now, to improve err reporting already, and port status:
  • CanMessageError: send a boost signal with an error message to a subscibing error handler
  • anagate: used in sendMessage() and sendRemoteMessage()
  • peak: sendErrorCode() sends an error code (not a message) at sendMessage(), triggerReconnectionThread() and sendRemoteRequest()
  • systec: sendErrorCode() sends an error code (not a message) at message reception with USB error AND the return code of sendMessage (also if it is OK)
  • sock: no wrapper method (defined but not used), error messages are sent when: socket recovers, error reading from socket, a CAN error
    was flagged from the socket (plus message and socket timestamp if possible), when opening a CAN port produces an error
• no functional changes