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/newconnectiondialog.h

@@ -24,6 +24,8 @@ public:
     CANCon::type getConnectionType();
     QString getPortName();
     QString getDriverName();
+    int getSerialSpeed();
+    int getBusSpeed();
 
 public slots:
     void handleConnTypeChanged();
@@ -43,6 +45,7 @@ private:
     void selectRemote();
     void selectKayak();
     void selectMQTT();
+    void selectLawicel();
     bool isSerialBusAvailable();
     void setPortName(CANCon::type pType, QString pPortName, QString pDriver);
 };