Added debugging mode for simultaneous QML and C++ debugging

It's not yet possible to attach to an external app running a qml
debugging server, because the server is only started on startup if an
env variable is set. Changing this requires action from Brisbane, but
even the current solution works for C++ apps with QML in them.

Task-number: BAUHAUS-585
Reviewed-by: dt

src/plugins/qmlinspector/startexternalqmldialog.cpp

@@ -0,0 +1,54 @@
+#include "startexternalqmldialog.h"
+#include "ui_startexternalqmldialog.h"
+
+#include <utils/pathchooser.h>
+#include <QPushButton>
+
+
+namespace Qml {
+namespace Internal {
+
+
+StartExternalQmlDialog::StartExternalQmlDialog(QWidget *parent)
+  : QDialog(parent), m_ui(new Ui::StartExternalQmlDialog)
+{
+    m_ui->setupUi(this);
+    m_ui->buttonBox->button(QDialogButtonBox::Ok)->setDefault(true);
+    m_ui->projectDisplayName->setText(tr("<No project>"));
+
+    connect(m_ui->buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
+    connect(m_ui->buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
+}
+
+StartExternalQmlDialog::~StartExternalQmlDialog()
+{
+    delete m_ui;
+}
+
+void StartExternalQmlDialog::setDebuggerUrl(const QString &str)
+{
+    m_ui->urlLine->setText(str);
+}
+
+QString StartExternalQmlDialog::debuggerUrl() const
+{
+    return m_ui->urlLine->text();
+}
+
+void StartExternalQmlDialog::setPort(quint16 str)
+{
+    m_ui->portSpinBox->setValue(str);
+}
+
+quint16 StartExternalQmlDialog::port() const
+{
+    return m_ui->portSpinBox->value();
+}
+
+void StartExternalQmlDialog::setProjectDisplayName(const QString &projectName)
+{
+    m_ui->projectDisplayName->setText(projectName);
+}
+
+} // Internal
+} // Qml