Allow setting SensorObject's name after construction

It's just a user visible string so there seems no harm in this. It is
not yet properly signalled to the client that it changed however.

systemstats/SensorObject.cpp

@@ -61,6 +61,16 @@ QString SensorObject::path() const
     return m_parent->id() % QLatin1Char('/') % m_id;
 }
 
+void SensorObject::setName(const QString& newName)
+{
+    if (newName == m_name) {
+        return;
+    }
+
+    m_name = newName;
+    Q_EMIT nameChanged();
+}
+
 void SensorObject::setParentContainer(SensorContainer* parent)
 {
     m_parent = parent;

systemstats/SensorObject.h

@@ -40,8 +40,10 @@ public:
     ~SensorObject();
 
     QString id() const;
-    QString name() const;
     QString path() const;
+    QString name() const;
+
+    void setName(const QString &newName);
     void setParentContainer(SensorContainer *parent);
 
     QList<SensorProperty *> sensors() const;
@@ -50,6 +52,7 @@ public:
     void addProperty(SensorProperty *property);
 
     bool isSubscribed() const;
+
 Q_SIGNALS:
     /**
      * Emitted when a client subscribes to one or more of the underlying properties of this object
@@ -62,6 +65,11 @@ Q_SIGNALS:
      */
     void aboutToBeRemoved();
 
+    /**
+     * Emitted whenever the object's name changes.
+     */
+    void nameChanged();
+
 private:
     SensorContainer *m_parent = nullptr;
     QString m_id;