ProjectExplorer: Add RunControl::set{Kit,Target}

For cases where no genuine RunConfiguration is available.

Use it in the debugger for the cases triggered from the menu.

Change-Id: I5671f4f5db2547c4a7a70bd34292bb6ccc8e6bf4
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/debugger/debuggerruncontrol.h

@@ -47,9 +47,9 @@ class DEBUGGER_EXPORT DebuggerRunTool : public ProjectExplorer::RunWorker
     Q_OBJECT
 
 public:
+    enum AllowTerminal { DoAllowTerminal, DoNotAllowTerminal };
     explicit DebuggerRunTool(ProjectExplorer::RunControl *runControl,
-                             ProjectExplorer::Kit *kit = nullptr,
-                             bool allowTerminal = true);
+                             AllowTerminal allowTerminal = DoAllowTerminal);
     ~DebuggerRunTool() override;
 
     void startRunControl();