Add a new connection type - Lawicel. It works for some devices, not

all. More development needed but this is a start. Also added ability
to set serial speed and bus speed in the device setup which may be
useful for other connection devices too.

connections/socketcand.cpp

@@ -10,7 +10,7 @@
 #include "socketcand.h"
 
 SocketCANd::SocketCANd(QString portName) :
-    CANConnection(portName, "kayak", CANCon::KAYAK, 1, 4000, true),
+    CANConnection(portName, "kayak", CANCon::KAYAK, 0, 0, 1, 4000, true),
     mTimer(this) /*NB: set this as parent of timer to manage it from working thread */
 {