Qbs: Properly report related runconfigurations for Qbs nodes

This fixes the run options in the context menu.

Change-Id: If4911f7357329fcb843206165e20d53bf6717258
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/qbsprojectmanager/qbsnodes.h

@@ -151,6 +151,8 @@ public:
     void setQbsProductData(const qbs::ProductData *prd);
     const qbs::ProductData *qbsProductData() const { return m_qbsProductData; }
 
+    QList<ProjectExplorer::RunConfiguration *> runConfigurationsFor(Node *node);
+
 private:
     QbsGroupNode *findGroupNode(const QString &name);